$FBK
FB Financial Corp Stock $fbk

$fbk Overview Financials Valuation SEC Filings Company Website

2023 Q1 Form 10-K Financial Statement

#000164974923000047 Filed on February 28, 2023

Income Statement

Concept	2023 Q1	2022 Q4	2022
Revenue	$159.5M		$481.4M
YoY Change	67.65%		25.05%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$2.228M	$2.951M	$8.017M
YoY Change	9.43%	-13.21%	-4.74%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$55.82M		$69.19M
YoY Change	703.74%		83.87%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$46.08M	$48.19M	$159.6M
YoY Change	3.43%	-23.26%	-34.35%
Income Tax	$9.697M	$10.04M	$35.00M
% Of Pretax Income	21.04%	20.84%	21.94%
Net Earnings	$36.38M	$38.14M	$124.6M
YoY Change	3.25%	-21.84%	-34.54%
Net Earnings / Revenue	22.81%		25.87%
Basic Earnings Per Share	$0.78		$2.64
Diluted Earnings Per Share	$0.78	$810.9K	$2.637M
COMMON SHARES
Basic Shares Outstanding	46.63M shares	46.93M shares	47.11M shares
Diluted Shares Outstanding	46.77M shares		47.24M shares

Balance Sheet

Concept	2023 Q1	2022 Q4	2022
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$1.320B	$1.027B
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$210.5M	$206.4M	$206.4M
YoY Change	14.63%	11.55%	11.55%
Goodwill	$242.6M	$242.6M
YoY Change	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments	$3.059M	$2.990M	$2.990M
YoY Change	-4.79%	-0.33%	-0.33%
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$13.10B	$12.85B	$12.85B
YoY Change	3.37%	1.99%	1.98%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable			$8.648M
YoY Change			188.27%
Accrued Expenses	$236.3M	$250.7M	$250.7M
YoY Change	66.05%	60.72%	138.79%
Deferred Revenue
YoY Change
Short-Term Debt	$38.20M	$86.95M	$86.95M
YoY Change		112.06%	112.06%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$236.3M	$250.7M	$250.7M
YoY Change	66.05%	60.72%	132.15%
LONG-TERM LIABILITIES
Long-Term Debt	$312.1M	$415.7M	$415.7M
YoY Change	100.43%	217.31%	217.31%
Other Long-Term Liabilities			$122.2M
YoY Change			154.5%
Total Long-Term Liabilities	$312.1M	$415.7M	$415.7M
YoY Change	100.43%	217.31%	132.22%
TOTAL LIABILITIES
Total Short-Term Liabilities	$236.3M	$250.7M	$250.7M
Total Long-Term Liabilities	$312.1M	$415.7M	$415.7M
Total Liabilities	$11.73B	$11.52B	$11.52B
YoY Change	3.87%	3.2%	3.2%
SHAREHOLDERS EQUITY
Retained Earnings	$615.9M	$586.5M
YoY Change	19.43%	20.52%
Common Stock	$903.4M	$908.3M
YoY Change	-3.45%	-3.38%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.370B	$1.325B	$1.325B
YoY Change
Total Liabilities & Shareholders Equity	$13.10B	$12.85B	$12.85B
YoY Change	3.37%	1.99%	1.98%

Cashflow Statement

Concept	2023 Q1	2022 Q4	2022
OPERATING ACTIVITIES
Net Income	$36.38M	$38.14M	$124.6M
YoY Change	3.25%	-21.84%	-34.54%
Depreciation, Depletion And Amortization	$2.228M	$2.951M	$8.017M
YoY Change	9.43%	-13.21%	-4.74%
Cash From Operating Activities	$98.38M	$45.67M	$789.3M
YoY Change	-65.86%	-52.38%	1338.33%
INVESTING ACTIVITIES
Capital Expenditures	$9.450M	$4.569M	$10.63M
YoY Change	1472.38%	-607.67%	74.19%
Acquisitions
YoY Change
Other Investing Activities	-$8.834M	-$161.2M	-$1.733B
YoY Change	-98.15%	-56.82%	105.51%
Cash From Investing Activities	-$18.28M	-$165.8M	-$1.744B
YoY Change	-96.17%	-55.71%	105.3%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$212.8M	528.9M	$184.1M
YoY Change	57.42%	-29.62%	-85.56%
NET CHANGE
Cash From Operating Activities	$98.38M	45.67M	$789.3M
Cash From Investing Activities	-$18.28M	-165.8M	-$1.744B
Cash From Financing Activities	$212.8M	528.9M	$184.1M
Net Change In Cash	$292.9M	408.8M	-$770.7M
YoY Change	-638.13%	-13.6%	-260.61%
FREE CASH FLOW
Cash From Operating Activities	$98.38M	$45.67M	$789.3M
Capital Expenditures	$9.450M	$4.569M	$10.63M
Free Cash Flow	$88.93M	$41.10M	$778.7M
YoY Change	-69.07%	-57.54%	1496.48%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2022	dei	Amendment Flag AmendmentFlag	false
CY2022	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
CY2022	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2022	dei	Entity Central Index Key EntityCentralIndexKey	0001649749
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
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CY2021Q4	us-gaap	Finance Lease Liability Statement Of Financial Position Extensible List FinanceLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2022#DebtLongtermAndShorttermCombinedAmount
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CY2022	dei	Document Type DocumentType	10-K
CY2022	dei	Document Annual Report DocumentAnnualReport	true
CY2020	us-gaap	Contractually Specified Servicing Fee Income Statement Of Income Or Comprehensive Income Extensible Enumeration ContractuallySpecifiedServicingFeeIncomeStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration	http://fasb.org/us-gaap/2022#RevenueFromContractWithCustomerIncludingAssessedTax http://investors.firstbankonline.com/20221231#NoninterestExpenseOther
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CY2022	dei	Document Period End Date DocumentPeriodEndDate	2022-12-31
CY2022	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2022	dei	Document Transition Report DocumentTransitionReport	false
CY2022	dei	Entity File Number EntityFileNumber	001-37875
CY2022	dei	Entity Registrant Name EntityRegistrantName	FB FINANCIAL CORPORATION
CY2022	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	TN
CY2022	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	TN
CY2022	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	62-1216058
CY2022	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	62-1216058
CY2022	dei	Entity Address Address Line1 EntityAddressAddressLine1	211 Commerce Street
CY2022	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 300
CY2022	dei	Entity Address City Or Town EntityAddressCityOrTown	Nashville
CY2022	dei	Entity Address State Or Province EntityAddressStateOrProvince	TN
CY2022	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	37201
CY2022	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	37201
CY2022	dei	City Area Code CityAreaCode	615
CY2022	dei	Local Phone Number LocalPhoneNumber	564-1212
CY2022	dei	Security12b Title Security12bTitle	Common Stock, Par Value $1.00 Per Share
CY2022	dei	Trading Symbol TradingSymbol	FBK
CY2022	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2022	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2022	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
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CY2022	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2022	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2022	dei	Auditor Firm AuditorFirmId	173
CY2022	dei	Auditor Name AuditorName	Crowe LLP
CY2022	dei	Auditor Location AuditorLocation	Franklin, Tennessee
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CY2022	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-376000	usd
CY2021	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	324000	usd
CY2020	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	1631000	usd
CY2022	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-114000	usd
CY2021	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	2504000	usd
CY2020	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-1491000	usd
CY2022	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-151000	usd
CY2021	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	323000	usd
CY2020	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-90000	usd
CY2022	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	5213000	usd
CY2021	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	19047000	usd
CY2020	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	15322000	usd
CY2022	us-gaap	Noninterest Income NoninterestIncome	114667000	usd
CY2021	us-gaap	Noninterest Income NoninterestIncome	228255000	usd
CY2020	us-gaap	Noninterest Income NoninterestIncome	301855000	usd
CY2022	us-gaap	Labor And Related Expense LaborAndRelatedExpense	211491000	usd
CY2021	us-gaap	Labor And Related Expense LaborAndRelatedExpense	248318000	usd
CY2020	us-gaap	Labor And Related Expense LaborAndRelatedExpense	233768000	usd
CY2022	us-gaap	Occupancy Net OccupancyNet	23562000	usd
CY2021	us-gaap	Occupancy Net OccupancyNet	22733000	usd
CY2020	us-gaap	Occupancy Net OccupancyNet	18979000	usd
CY2022	fbk	Legal And Professional Fees LegalAndProfessionalFees	15028000	usd
CY2021	fbk	Legal And Professional Fees LegalAndProfessionalFees	9161000	usd
CY2020	fbk	Legal And Professional Fees LegalAndProfessionalFees	7654000	usd
CY2022	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	9315000	usd
CY2021	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	9987000	usd
CY2020	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	11390000	usd
CY2022	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	usd
CY2021	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	usd
CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	34879000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4585000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5473000	usd
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5323000	usd
CY2022	us-gaap	Advertising Expense AdvertisingExpense	11208000	usd
CY2021	us-gaap	Advertising Expense AdvertisingExpense	13921000	usd
CY2020	us-gaap	Advertising Expense AdvertisingExpense	10062000	usd
CY2022	fbk	Mortgage Restructuring Expense MortgageRestructuringExpense	12458000	usd
CY2021	fbk	Mortgage Restructuring Expense MortgageRestructuringExpense	0	usd
CY2020	fbk	Mortgage Restructuring Expense MortgageRestructuringExpense	0	usd
CY2022	fbk	Noninterest Expense Other NoninterestExpenseOther	60699000	usd
CY2021	fbk	Noninterest Expense Other NoninterestExpenseOther	63974000	usd
CY2020	fbk	Noninterest Expense Other NoninterestExpenseOther	55030000	usd
CY2022	us-gaap	Noninterest Expense NoninterestExpense	348346000	usd
CY2021	us-gaap	Noninterest Expense NoninterestExpense	373567000	usd
CY2020	us-gaap	Noninterest Expense NoninterestExpense	377085000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	159574000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	243051000	usd
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	82461000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35003000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	52750000	usd
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18832000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	124571000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	190301000	usd
CY2020	us-gaap	Profit Loss ProfitLoss	63629000	usd
CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	16000	usd
CY2021	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	16000	usd
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	8000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	124555000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	190285000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	63621000	usd
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.64
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.01
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.69
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.64
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.97
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.67
CY2022	us-gaap	Profit Loss ProfitLoss	124571000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	190301000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-363000	usd
CY2020	us-gaap	Profit Loss ProfitLoss	63629000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-62316000	usd
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-7224000	usd
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	5781000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-176798000	usd
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-22475000	usd
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	18430000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	33000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	348000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	1000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	93000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	987000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	532000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	293000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	1508000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	831000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-1031000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	0	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	0	usd
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	337000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	0	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	0	usd
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	955000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-175291000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-21737000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	15457000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-50720000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	168564000	usd
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	79086000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	16000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	16000	usd
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	8000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-50736000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	168548000	usd
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	79078000	usd
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	762329000	usd
CY2020	us-gaap	Profit Loss ProfitLoss	63629000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	15457000	usd
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10214000	usd
CY2020	us-gaap	Restricted Stock Value Shares Issued Net Of Tax Withholdings RestrictedStockValueSharesIssuedNetOfTaxWithholdings	-1510000	usd
CY2020	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	978000	usd
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.36
CY2020	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	14502000	usd
CY2020	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	8000	usd
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1291382000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	190301000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-21737000	usd
CY2021	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	7595000	usd
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10282000	usd
CY2021	us-gaap	Restricted Stock Value Shares Issued Net Of Tax Withholdings RestrictedStockValueSharesIssuedNetOfTaxWithholdings	-10158000	usd
CY2021	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1480000	usd
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.44
CY2021	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	21244000	usd
CY2021	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	16000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1432695000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	124571000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-175291000	usd
CY2022	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	39979000	usd
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9857000	usd
CY2022	us-gaap	Restricted Stock Value Shares Issued Net Of Tax Withholdings RestrictedStockValueSharesIssuedNetOfTaxWithholdings	-2842000	usd
CY2022	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1212000	usd
CY2022	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.52
CY2022	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	24689000	usd
CY2022	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	16000	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1325518000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	124571000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	190301000	usd
CY2020	us-gaap	Profit Loss ProfitLoss	63629000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	8017000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	8416000	usd
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	7536000	usd
CY2022	fbk	Amortization Of Other Intangible Assets AmortizationOfOtherIntangibleAssets	4585000	usd
CY2021	fbk	Amortization Of Other Intangible Assets AmortizationOfOtherIntangibleAssets	5473000	usd
CY2020	fbk	Amortization Of Other Intangible Assets AmortizationOfOtherIntangibleAssets	5323000	usd
CY2022	fbk	Capitalization Of Mortgage Servicing Rights Ms Rs CapitalizationOfMortgageServicingRightsMSRs	20809000	usd
CY2021	fbk	Capitalization Of Mortgage Servicing Rights Ms Rs CapitalizationOfMortgageServicingRightsMSRs	39018000	usd
CY2020	fbk	Capitalization Of Mortgage Servicing Rights Ms Rs CapitalizationOfMortgageServicingRightsMSRs	47025000	usd
CY2022	fbk	Change In Fair Value Of Mortgage Servicing Rights ChangeInFairValueOfMortgageServicingRights	-32044000	usd
CY2021	fbk	Change In Fair Value Of Mortgage Servicing Rights ChangeInFairValueOfMortgageServicingRights	3503000	usd
CY2020	fbk	Change In Fair Value Of Mortgage Servicing Rights ChangeInFairValueOfMortgageServicingRights	47660000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	9857000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	10282000	usd
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	10214000	usd
CY2022	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	10393000	usd
CY2021	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-38995000	usd
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	94606000	usd
CY2022	fbk	Unfunded Commitments Credit Loss Expense Reversal UnfundedCommitmentsCreditLossExpenseReversal	8589000	usd
CY2021	fbk	Unfunded Commitments Credit Loss Expense Reversal UnfundedCommitmentsCreditLossExpenseReversal	-1998000	usd
CY2020	fbk	Unfunded Commitments Credit Loss Expense Reversal UnfundedCommitmentsCreditLossExpenseReversal	13361000	usd
CY2022	fbk	Provision For Mortgage Loan Repurchases Or Indemnifications ProvisionForMortgageLoanRepurchasesOrIndemnifications	-2989000	usd
CY2021	fbk	Provision For Mortgage Loan Repurchases Or Indemnifications ProvisionForMortgageLoanRepurchasesOrIndemnifications	-766000	usd
CY2020	fbk	Provision For Mortgage Loan Repurchases Or Indemnifications ProvisionForMortgageLoanRepurchasesOrIndemnifications	2607000	usd
CY2022	fbk	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion Amortization CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretionAmortization	-1020000	usd
CY2021	fbk	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion Amortization CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretionAmortization	-853000	usd
CY2020	fbk	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion Amortization CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretionAmortization	3788000	usd
CY2022	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-6589000	usd
CY2021	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-8777000	usd
CY2020	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-7382000	usd
CY2022	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-376000	usd
CY2021	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	324000	usd
CY2020	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	1631000	usd
CY2022	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	2403476000	usd
CY2021	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	6300892000	usd
CY2020	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	6650258000	usd
CY2022	us-gaap	Payments To Purchase Loans Held For Sale PaymentsToPurchaseLoansHeldForSale	194000	usd
CY2021	us-gaap	Payments To Purchase Loans Held For Sale PaymentsToPurchaseLoansHeldForSale	487000	usd
CY2020	us-gaap	Payments To Purchase Loans Held For Sale PaymentsToPurchaseLoansHeldForSale	0	usd
CY2022	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	3067204000	usd
CY2021	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	6387110000	usd
CY2020	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	6487809000	usd
CY2022	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	47783000	usd
CY2021	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	161964000	usd
CY2020	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	270802000	usd
CY2022	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-114000	usd
CY2021	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	2504000	usd
CY2020	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-1491000	usd
CY2022	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-151000	usd
CY2021	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	323000	usd
CY2020	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-90000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	12552000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	30770000	usd
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-25530000	usd
CY2022	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	1452000	usd
CY2021	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	1542000	usd
CY2020	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	1556000	usd
CY2022	fbk	Increase Decrease In Operating Leases IncreaseDecreaseInOperatingLeases	5030000	usd
CY2021	fbk	Increase Decrease In Operating Leases IncreaseDecreaseInOperatingLeases	-969000	usd
CY2020	fbk	Increase Decrease In Operating Leases IncreaseDecreaseInOperatingLeases	2664000	usd
CY2020	fbk	Increase Decrease In Operating Leases IncreaseDecreaseInOperatingLeases	2664000	usd
CY2022	fbk	Increase Decrease In Other Assets And Interest Receivable IncreaseDecreaseInOtherAssetsAndInterestReceivable	-17222000	usd
CY2021	fbk	Increase Decrease In Other Assets And Interest Receivable IncreaseDecreaseInOtherAssetsAndInterestReceivable	59283000	usd
CY2020	fbk	Increase Decrease In Other Assets And Interest Receivable IncreaseDecreaseInOtherAssetsAndInterestReceivable	-57316000	usd
CY2022	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	56247000	usd
CY2021	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-100108000	usd
CY2020	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	43532000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	789326000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	54878000	usd
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-270002000	usd
CY2022	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	1218000	usd
CY2021	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	8855000	usd
CY2020	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	146494000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	204748000	usd
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	296256000	usd
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	220549000	usd
CY2022	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	242889000	usd
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	847212000	usd
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	424971000	usd
CY2022	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	1719652000	usd
CY2021	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	457042000	usd
CY2020	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-4383000	usd
CY2022	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	43676000	usd
CY2021	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	147276000	usd
CY2020	us-gaap	Proceeds From Sale And Collection Of Loans Heldforsale ProceedsFromSaleAndCollectionOfLoansHeldforsale	114031000	usd
CY2022	us-gaap	Proceeds From Sale Of Federal Home Loan Bank Stock ProceedsFromSaleOfFederalHomeLoanBankStock	0	usd
CY2021	us-gaap	Proceeds From Sale Of Federal Home Loan Bank Stock ProceedsFromSaleOfFederalHomeLoanBankStock	4294000	usd
CY2020	us-gaap	Proceeds From Sale Of Federal Home Loan Bank Stock ProceedsFromSaleOfFederalHomeLoanBankStock	0	usd
CY2022	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	26424000	usd
CY2021	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	5279000	usd
CY2020	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	515000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10629000	usd
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6102000	usd
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5934000	usd
CY2022	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	875000	usd
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	usd
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	usd
CY2022	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	4959000	usd
CY2021	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	9396000	usd
CY2020	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	6937000	usd
CY2022	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	usd
CY2021	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	usd
CY2020	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	715000	usd
CY2022	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	0	usd
CY2021	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	0	usd
CY2020	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	248447000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1744118000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-849558000	usd
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	310136000	usd
CY2022	us-gaap	Increase Decrease In Demand Deposits IncreaseDecreaseInDemandDeposits	-262109000	usd
CY2021	us-gaap	Increase Decrease In Demand Deposits IncreaseDecreaseInDemandDeposits	1685033000	usd
CY2020	us-gaap	Increase Decrease In Demand Deposits IncreaseDecreaseInDemandDeposits	1519868000	usd
CY2022	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	290893000	usd
CY2021	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-306173000	usd
CY2020	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-328035000	usd
CY2022	fbk	Increase Decrease In Securities Sold Under Agreements To Repurchase And Federal Funds Purchased IncreaseDecreaseInSecuritiesSoldUnderAgreementsToRepurchaseAndFederalFundsPurchased	46229000	usd
CY2021	fbk	Increase Decrease In Securities Sold Under Agreements To Repurchase And Federal Funds Purchased IncreaseDecreaseInSecuritiesSoldUnderAgreementsToRepurchaseAndFederalFundsPurchased	8517000	usd
CY2020	fbk	Increase Decrease In Securities Sold Under Agreements To Repurchase And Federal Funds Purchased IncreaseDecreaseInSecuritiesSoldUnderAgreementsToRepurchaseAndFederalFundsPurchased	5262000	usd
CY2022	us-gaap	Payments For Federal Home Loan Bank Advances PaymentsForFederalHomeLoanBankAdvances	0	usd
CY2021	us-gaap	Payments For Federal Home Loan Bank Advances PaymentsForFederalHomeLoanBankAdvances	0	usd
CY2020	us-gaap	Payments For Federal Home Loan Bank Advances PaymentsForFederalHomeLoanBankAdvances	250000000	usd
CY2022	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	175000000	usd
CY2021	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	0	usd
CY2020	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	0	usd
CY2022	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	0	usd
CY2021	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	0	usd
CY2020	us-gaap	Proceeds From Issuance Of Subordinated Long Term Debt ProceedsFromIssuanceOfSubordinatedLongTermDebt	98189000	usd
CY2022	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	0	usd
CY2021	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	60000000	usd
CY2020	us-gaap	Repayments Of Subordinated Debt RepaymentsOfSubordinatedDebt	0	usd
CY2022	fbk	Amortization Accretion Of Debt Issuance Costs And Fair Value Premiums AmortizationAccretionOfDebtIssuanceCostsAndFairValuePremiums	-387000	usd
CY2021	fbk	Amortization Accretion Of Debt Issuance Costs And Fair Value Premiums AmortizationAccretionOfDebtIssuanceCostsAndFairValuePremiums	-17000	usd
CY2020	fbk	Amortization Accretion Of Debt Issuance Costs And Fair Value Premiums AmortizationAccretionOfDebtIssuanceCostsAndFairValuePremiums	397000	usd
CY2022	fbk	Proceeds From Payments For Other Borrowings ProceedsFromPaymentsForOtherBorrowings	0	usd
CY2021	fbk	Proceeds From Payments For Other Borrowings ProceedsFromPaymentsForOtherBorrowings	-15000000	usd
CY2020	fbk	Proceeds From Payments For Other Borrowings ProceedsFromPaymentsForOtherBorrowings	15000000	usd
CY2022	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2842000	usd
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	10158000	usd
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1510000	usd
CY2022	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1212000	usd
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1480000	usd
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	978000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	39979000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	7595000	usd
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	24503000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	20866000	usd
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	14177000	usd
CY2022	fbk	Payments Made Upon Vesting Of Dividend Equivalent Units PaymentsMadeUponVestingOfDividendEquivalentUnits	168000	usd
CY2021	fbk	Payments Made Upon Vesting Of Dividend Equivalent Units PaymentsMadeUponVestingOfDividendEquivalentUnits	717000	usd
CY2020	fbk	Payments Made Upon Vesting Of Dividend Equivalent Units PaymentsMadeUponVestingOfDividendEquivalentUnits	87000	usd
CY2022	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	16000	usd
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	16000	usd
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	8000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	184104000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1274522000	usd
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1045083000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-770688000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	479842000	usd
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1085217000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1797740000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1317898000	usd
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	232681000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1027052000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1797740000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1317898000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	63701000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	41238000	usd
CY2020	us-gaap	Interest Paid Net InterestPaidNet	48679000	usd
CY2022	us-gaap	Income Taxes Paid IncomeTaxesPaid	906000	usd
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	61693000	usd
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	20419000	usd
CY2022	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	1437000	usd
CY2021	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	5262000	usd
CY2020	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	2746000	usd
CY2022	fbk	Other Real Estate Owned Transfer To Other Real Estate Owned OtherRealEstateOwnedTransferToOtherRealEstateOwned	351000	usd
CY2021	fbk	Other Real Estate Owned Transfer To Other Real Estate Owned OtherRealEstateOwnedTransferToOtherRealEstateOwned	0	usd
CY2020	fbk	Other Real Estate Owned Transfer To Other Real Estate Owned OtherRealEstateOwnedTransferToOtherRealEstateOwned	841000	usd
CY2022	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	0	usd
CY2021	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	704000	usd
CY2020	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	305000	usd
CY2022	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	46364000	usd
CY2021	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	10408000	usd
CY2020	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	11483000	usd
CY2022	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	24479000	usd
CY2021	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	86315000	usd
CY2020	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	55766000	usd
CY2022	us-gaap	Loans Assumed1 LoansAssumed1	26211000	usd
CY2021	us-gaap	Loans Assumed1 LoansAssumed1	0	usd
CY2020	us-gaap	Loans Assumed1 LoansAssumed1	0	usd
CY2022	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	0	usd
CY2021	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	0	usd
CY2020	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	480867000	usd
CY2022Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	222000	usd
CY2021Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	400000	usd
CY2020Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	238000	usd
CY2022	fbk	Non Cash Transaction Due To Adoption Of Recognition And Measurement Of Financial Assets And Liabilities NonCashTransactionDueToAdoptionOfRecognitionAndMeasurementOfFinancialAssetsAndLiabilities	0	usd
CY2021	fbk	Non Cash Transaction Due To Adoption Of Recognition And Measurement Of Financial Assets And Liabilities NonCashTransactionDueToAdoptionOfRecognitionAndMeasurementOfFinancialAssetsAndLiabilities	0	usd
CY2020	fbk	Non Cash Transaction Due To Adoption Of Recognition And Measurement Of Financial Assets And Liabilities NonCashTransactionDueToAdoptionOfRecognitionAndMeasurementOfFinancialAssetsAndLiabilities	25018000	usd
CY2022	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	25399000	usd
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	970000	usd
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2393000	usd
CY2022Q4	fbk	Number Of Full Service Branches NumberOfFullServiceBranches	82	branch
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2022	fbk	Percent Of Principal Balance Allowed To Buy Back Under Government National Mortgage Association Optional Repurchase Programs PercentOfPrincipalBalanceAllowedToBuyBackUnderGovernmentNationalMortgageAssociationOptionalRepurchasePrograms	100
CY2022	us-gaap	Payments To Acquire Other Loans And Leases Held For Investment PaymentsToAcquireOtherLoansAndLeasesHeldForInvestment	20593000	usd
CY2021	us-gaap	Payments To Acquire Other Loans And Leases Held For Investment PaymentsToAcquireOtherLoansAndLeasesHeldForInvestment	40417000	usd
CY2020	us-gaap	Payments To Acquire Other Loans And Leases Held For Investment PaymentsToAcquireOtherLoansAndLeasesHeldForInvestment	10586000	usd
CY2022	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	usd
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	usd
CY2022	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	usd
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	usd
CY2022	fbk	Number Of Methods To Deliver Mortgage Loans NumberOfMethodsToDeliverMortgageLoans	2	method
CY2021Q4	fbk	Deposits With Federal Home Loan Banks DepositsWithFederalHomeLoanBanks	17130000	usd
CY2022Q4	fbk	Risk Account Guaranty RiskAccountGuaranty	9558000	usd
CY2021Q4	fbk	Risk Account Guaranty RiskAccountGuaranty	8372000	usd
CY2022Q4	fbk	Lender Risk Account Contribution Percentage LenderRiskAccountContributionPercentage	1
CY2022	fbk	Lender Risk Account Period To Release Portion Not Used To Pay Losses LenderRiskAccountPeriodToReleasePortionNotUsedToPayLosses	P30Y
CY2022	fbk	Lender Risk Account Initial Fill Up Period LenderRiskAccountInitialFillUpPeriod	P5Y
CY2022	us-gaap	Net Income Loss NetIncomeLoss	124555000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	190285000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	63621000	usd
CY2022	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	usd
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	usd
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	0	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	124555000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	190285000	usd
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	63621000	usd
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47113470	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47431102	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	37621720	shares
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.64
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.01
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.69
CY2022	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Diluted NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted	124555000	usd
CY2021	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Diluted NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted	190285000	usd
CY2020	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Diluted NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersDiluted	63621000	usd
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47113470	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47431102	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	37621720	shares
CY2022	us-gaap	Weighted Average Number Of Shares Contingently Issuable WeightedAverageNumberOfSharesContingentlyIssuable	126321	shares
CY2021	us-gaap	Weighted Average Number Of Shares Contingently Issuable WeightedAverageNumberOfSharesContingentlyIssuable	524778	shares
CY2020	us-gaap	Weighted Average Number Of Shares Contingently Issuable WeightedAverageNumberOfSharesContingentlyIssuable	478024	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	47239791	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	47955880	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	38099744	shares
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.64
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.97
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.67
CY2022	fbk	Number Of Delivery Channels NumberOfDeliveryChannels	2	channel
CY2020Q3	fbk	Business Combination Consideration Transferred Shares Outstanding BusinessCombinationConsiderationTransferredSharesOutstanding	15651243	shares
CY2020Q3	fbk	Financing Receivable Deterioration Credit Quality Since Origination FinancingReceivableDeteriorationCreditQualitySinceOrigination	0.279
CY2020Q1	fbk	Financing Receivable Deterioration Credit Quality Since Origination FinancingReceivableDeteriorationCreditQualitySinceOrigination	0.101
CY2020	fbk	Business Acquisition Pro Forma Interest Income Net BusinessAcquisitionProFormaInterestIncomeNet	338092000	usd
CY2020	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	654374000	usd
CY2020	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	65135000	usd
CY2022Q4	us-gaap	Federal Funds Sold FederalFundsSold	135128000	usd
CY2021Q4	us-gaap	Federal Funds Sold FederalFundsSold	53919000	usd
CY2022Q4	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	75408000	usd
CY2021Q4	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	74168000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1705574000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	458000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	234846000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1471186000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1673798000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	23120000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	18393000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1678525000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	2990000	usd
CY2021Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	3367000	usd
CY2022Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	22496000	usd
CY2021Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	8868000	usd
CY2022	fbk	Noncash Or Part Noncash Trade Date Receivable NoncashOrPartNoncashTradeDateReceivable	0	usd
CY2021	fbk	Noncash Or Part Noncash Trade Date Receivable NoncashOrPartNoncashTradeDateReceivable	0	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	4277000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	4225000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	21851000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	21884000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	161556000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	152181000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	54847000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	55307000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	61290000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	57859000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	45714000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	46975000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	234720000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	205084000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	255077000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	269737000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	461843000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	419349000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	377489000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	393903000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1705574000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1471186000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	1673798000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	1678525000	usd
CY2022	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1218000	usd
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	8855000	usd
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	146494000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	204748000	usd
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	296256000	usd
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	220549000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	4000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	127000	usd
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	1606000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	3000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	1000	usd
CY2020	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	271000	usd
CY2022	fbk	Equity Securities Fvni And Sale Gain Loss EquitySecuritiesFVNIAndSaleGainLoss	-377000	usd
CY2021	fbk	Equity Securities Fvni And Sale Gain Loss EquitySecuritiesFVNIAndSaleGainLoss	198000	usd
CY2020	fbk	Equity Securities Fvni And Sale Gain Loss EquitySecuritiesFVNIAndSaleGainLoss	296000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	646226000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	67665000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	793775000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	167181000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1440001000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	234846000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	928115000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	14703000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	102799000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	3690000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1030914000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	18393000	usd
CY2022Q4	fbk	Number Of Available For Sale Securities In Portfolio NumberOfAvailableForSaleSecuritiesInPortfolio	503	security
CY2021Q4	fbk	Number Of Available For Sale Securities In Portfolio NumberOfAvailableForSaleSecuritiesInPortfolio	511	security
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	454	security
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	80	security
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	9298212000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	7604662000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	134192000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	125559000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	9164020000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	7479103000	usd
CY2022Q4	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	38507000	usd
CY2021Q4	us-gaap	Financing Receivable Accrued Interest Before Allowance For Credit Loss FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss	31676000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	125559000	usd
CY2022	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	10393000	usd
CY2022	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2941000	usd
CY2022	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	4701000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	134192000	usd
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	170389000	usd
CY2021	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-38995000	usd
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2033000	usd
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	7868000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	125559000	usd
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	31139000	usd
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	94606000	usd
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	3003000	usd
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	15305000	usd
CY2020	us-gaap	Financing Receivable Allowance For Credit Loss Purchased With Credit Deterioration Increase FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	25500000	usd
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	170389000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	18415000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	27431000	usd
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	9298212000	usd
CY2021Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	11735000	usd
CY2021Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	35568000	usd
CY2021Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	7604662000	usd
CY2022Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	15714000	usd
CY2022Q4	fbk	Financing Receivable Nonaccrual Related Allowance FinancingReceivableNonaccrualRelatedAllowance	11717000	usd
CY2022Q4	fbk	Financing Receivable Allowance For Credit Losses Nonaccrual FinancingReceivableAllowanceForCreditLossesNonaccrual	433000	usd
CY2022	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	1544000	usd
CY2021Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	24386000	usd
CY2021Q4	fbk	Financing Receivable Nonaccrual Related Allowance FinancingReceivableNonaccrualRelatedAllowance	11182000	usd
CY2021Q4	fbk	Financing Receivable Allowance For Credit Losses Nonaccrual FinancingReceivableAllowanceForCreditLossesNonaccrual	555000	usd
CY2021	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	3400000	usd
CY2022	us-gaap	Financing Receivable Accrued Interest Writeoff FinancingReceivableAccruedInterestWriteoff	1089000	usd
CY2021	us-gaap	Financing Receivable Accrued Interest Writeoff FinancingReceivableAccruedInterestWriteoff	804000	usd
CY2020	us-gaap	Financing Receivable Accrued Interest Writeoff FinancingReceivableAccruedInterestWriteoff	627000	usd
CY2022Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	13854000	usd
CY2021Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	32435000	usd
CY2022Q4	fbk	Financing Receivable Troubled Debt Restructuring Nonaccrual FinancingReceivableTroubledDebtRestructuringNonaccrual	7321000	usd
CY2021Q4	fbk	Financing Receivable Troubled Debt Restructuring Nonaccrual FinancingReceivableTroubledDebtRestructuringNonaccrual	11084000	usd
CY2022Q4	fbk	Financing Receivable Modifications Recorded Investment Specific Reserves FinancingReceivableModificationsRecordedInvestmentSpecificReserves	253000	usd
CY2021Q4	fbk	Financing Receivable Modifications Recorded Investment Specific Reserves FinancingReceivableModificationsRecordedInvestmentSpecificReserves	1245000	usd
CY2022	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	9	loan
CY2022	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	1075000	usd
CY2022	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	1301000	usd
CY2022	fbk	Financing Receivable Modifications Charge Offs And Specific Reserves FinancingReceivableModificationsChargeOffsAndSpecificReserves	0	usd
CY2021	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	23	loan
CY2021	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	34115000	usd
CY2021	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	34115000	usd
CY2021	fbk	Financing Receivable Modifications Charge Offs And Specific Reserves FinancingReceivableModificationsChargeOffsAndSpecificReserves	446000	usd
CY2020	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	18	loan
CY2020	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	9516000	usd
CY2020	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	9516000	usd
CY2020	fbk	Financing Receivable Modifications Charge Offs And Specific Reserves FinancingReceivableModificationsChargeOffsAndSpecificReserves	0	usd
CY2022	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	304000	usd
CY2021	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	304000	usd
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	1367000	usd
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset Before Accumulated Amortization FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization	1487000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	222063000	usd
CY2021Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Before Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization	212623000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	75747000	usd
CY2021Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	68884000	usd
CY2022Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	146316000	usd
CY2021Q4	us-gaap	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	143739000	usd
CY2022	fbk	Depreciation And Finance Lease Right Of Use Asset Amortization DepreciationAndFinanceLeaseRightOfUseAssetAmortization	7554000	usd
CY2021	fbk	Depreciation And Finance Lease Right Of Use Asset Amortization DepreciationAndFinanceLeaseRightOfUseAssetAmortization	7411000	usd
CY2020	fbk	Depreciation And Finance Lease Right Of Use Asset Amortization DepreciationAndFinanceLeaseRightOfUseAssetAmortization	7009000	usd
CY2021Q4	us-gaap	Foreclosed Assets ForeclosedAssets	9777000	usd
CY2020Q4	us-gaap	Foreclosed Assets ForeclosedAssets	12111000	usd
CY2019Q4	us-gaap	Foreclosed Assets ForeclosedAssets	18939000	usd
CY2022	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	1437000	usd
CY2021	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	5262000	usd
CY2020	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	2746000	usd
CY2022	fbk	Property Plant And Equipment Transfers To And From PropertyPlantAndEquipmentTransfersToAndFrom	351000	usd
CY2021	fbk	Property Plant And Equipment Transfers To And From PropertyPlantAndEquipmentTransfersToAndFrom	0	usd
CY2020	fbk	Property Plant And Equipment Transfers To And From PropertyPlantAndEquipmentTransfersToAndFrom	841000	usd
CY2022	fbk	Proceeds From Sale Of Other Real Estate Owned ProceedsFromSaleOfOtherRealEstateOwned	4955000	usd
CY2021	fbk	Proceeds From Sale Of Other Real Estate Owned ProceedsFromSaleOfOtherRealEstateOwned	9396000	usd
CY2020	fbk	Proceeds From Sale Of Other Real Estate Owned ProceedsFromSaleOfOtherRealEstateOwned	6937000	usd
CY2022	fbk	Gain Loss On Sale Of Foreclosed Real Estate Assets. GainLossOnSaleOfForeclosedRealEstateAssets.	328000	usd
CY2021	fbk	Gain Loss On Sale Of Foreclosed Real Estate Assets. GainLossOnSaleOfForeclosedRealEstateAssets.	3248000	usd
CY2020	fbk	Gain Loss On Sale Of Foreclosed Real Estate Assets. GainLossOnSaleOfForeclosedRealEstateAssets.	354000	usd
CY2022	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	0	usd
CY2021	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	704000	usd
CY2020	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	305000	usd
CY2022	fbk	Foreclosed Real Estate Expense Write Downs And Liquidations ForeclosedRealEstateExpenseWriteDownsAndLiquidations	442000	usd
CY2021	fbk	Foreclosed Real Estate Expense Write Downs And Liquidations ForeclosedRealEstateExpenseWriteDownsAndLiquidations	744000	usd
CY2020	fbk	Foreclosed Real Estate Expense Write Downs And Liquidations ForeclosedRealEstateExpenseWriteDownsAndLiquidations	1845000	usd
CY2022Q4	us-gaap	Foreclosed Assets ForeclosedAssets	5794000	usd
CY2021Q4	us-gaap	Foreclosed Assets ForeclosedAssets	9777000	usd
CY2020Q4	us-gaap	Foreclosed Assets ForeclosedAssets	12111000	usd
CY2022	us-gaap	Payments To Acquire Held For Sale Real Estate PaymentsToAcquireHeldForSaleRealEstate	2116000	usd
CY2021	us-gaap	Payments To Acquire Held For Sale Real Estate PaymentsToAcquireHeldForSaleRealEstate	3348000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	242561000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	242561000	usd
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2022	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	62523000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	50155000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	12368000	usd
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	62523000	usd
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	45570000	usd
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	16953000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	3658000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	2946000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	2306000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1563000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1080000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	815000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	12368000	usd
CY2022Q4	fbk	Lessee Number Of Operating Leases LesseeNumberOfOperatingLeases	58	lease
CY2022Q4	fbk	Lessee Number Of Finance Leases LesseeNumberOfFinanceLeases	1	lease
CY2022Q4	fbk	Lessee Operating And Finance Lease Number Of Options To Renew LesseeOperatingAndFinanceLeaseNumberOfOptionsToRenew	1	lease_renewal_option
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	60043000	usd
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	41686000	usd
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	1367000	usd
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	1487000	usd
CY2022Q4	fbk	Right Of Use Asset RightOfUseAsset	61410000	usd
CY2021Q4	fbk	Right Of Use Asset RightOfUseAsset	43173000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	69754000	usd
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	46367000	usd
CY2022Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	1420000	usd
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	1518000	usd
CY2022Q4	fbk	Lease Liability LeaseLiability	71174000	usd
CY2021Q4	fbk	Lease Liability LeaseLiability	47885000	usd
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P12Y1M6D
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P12Y4M24D
CY2022Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P12Y4M24D
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P13Y4M24D
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0308
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0273
CY2022Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0176
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0176
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	8441000	usd
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	7636000	usd
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	6228000	usd
CY2022	us-gaap	Short Term Lease Cost ShortTermLeaseCost	526000	usd
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	427000	usd
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	456000	usd
CY2022	us-gaap	Variable Lease Cost VariableLeaseCost	1078000	usd
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	1003000	usd
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	602000	usd
CY2022	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	364000	usd
CY2021	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	0	usd
CY2020	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	2142000	usd
CY2022	fbk	Gain Loss On Modification And Termination Of Lease GainLossOnModificationAndTerminationOfLease	18000	usd
CY2021	fbk	Gain Loss On Modification And Termination Of Lease GainLossOnModificationAndTerminationOfLease	805000	usd
CY2020	fbk	Gain Loss On Modification And Termination Of Lease GainLossOnModificationAndTerminationOfLease	0	usd
CY2022	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	28000	usd
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	25000	usd
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	11000	usd
CY2022	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	120000	usd
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	101000	usd
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	43000	usd
CY2022	us-gaap	Sublease Income SubleaseIncome	993000	usd
CY2021	us-gaap	Sublease Income SubleaseIncome	573000	usd
CY2020	us-gaap	Sublease Income SubleaseIncome	346000	usd
CY2022	us-gaap	Lease Cost LeaseCost	9546000	usd
CY2021	us-gaap	Lease Cost LeaseCost	7814000	usd
CY2020	us-gaap	Lease Cost LeaseCost	9136000	usd
CY2022	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	364000	usd
CY2022	fbk	Gain Loss On Modification And Termination Of Lease GainLossOnModificationAndTerminationOfLease	18000	usd
CY2021	fbk	Gain Loss On Modification And Termination Of Lease GainLossOnModificationAndTerminationOfLease	805000	usd
CY2020	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	2142000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	8085000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due In Next Rolling Twelve Months FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths	118000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Two LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo	8210000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Two FinanceLeaseLiabilityPaymentsDueInRollingYearTwo	120000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Three LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree	7909000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Three FinanceLeaseLiabilityPaymentsDueInRollingYearThree	121000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Four LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour	7724000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Four FinanceLeaseLiabilityPaymentsDueInRollingYearFour	123000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive	7340000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due In Rolling Year Five FinanceLeaseLiabilityPaymentsDueInRollingYearFive	125000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive	46503000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due In Rolling After Year Five FinanceLeaseLiabilityPaymentsDueInRollingAfterYearFive	977000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	85771000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	1584000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	16017000	usd
CY2022Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	164000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	69754000	usd
CY2022Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	1420000	usd
CY2021Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	115512000	usd
CY2020Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	79997000	usd
CY2019Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	75521000	usd
CY2022	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	20809000	usd
CY2021	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	39018000	usd
CY2020	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	47025000	usd
CY2022	fbk	Servicing Asset At Amortized Cost Additions From Acquisition ServicingAssetAtAmortizedCostAdditionsFromAcquisition	0	usd
CY2021	fbk	Servicing Asset At Amortized Cost Additions From Acquisition ServicingAssetAtAmortizedCostAdditionsFromAcquisition	0	usd
CY2020	fbk	Servicing Asset At Amortized Cost Additions From Acquisition ServicingAssetAtAmortizedCostAdditionsFromAcquisition	5111000	usd
CY2022	fbk	Servicing Asset At Fair Value Changes In Fair Value Due To Pay Offs Or Pay Downs ServicingAssetAtFairValueChangesInFairValueDueToPayOffsOrPayDowns	-16012000	usd
CY2021	fbk	Servicing Asset At Fair Value Changes In Fair Value Due To Pay Offs Or Pay Downs ServicingAssetAtFairValueChangesInFairValueDueToPayOffsOrPayDowns	-30583000	usd
CY2020	fbk	Servicing Asset At Fair Value Changes In Fair Value Due To Pay Offs Or Pay Downs ServicingAssetAtFairValueChangesInFairValueDueToPayOffsOrPayDowns	-27834000	usd
CY2022	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	48056000	usd
CY2021	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	27080000	usd
CY2020	us-gaap	Servicing Asset At Fair Value Changes In Fair Value Resulting From Changes In Valuation Inputs Or Changes In Assumptions ServicingAssetAtFairValueChangesInFairValueResultingFromChangesInValuationInputsOrChangesInAssumptions	-19826000	usd
CY2022Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	168365000	usd
CY2021Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	115512000	usd
CY2020Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	79997000	usd
CY2022	us-gaap	Contractually Specified Servicing Fees Amount ContractuallySpecifiedServicingFeesAmount	30763000	usd
CY2021	us-gaap	Contractually Specified Servicing Fees Amount ContractuallySpecifiedServicingFeesAmount	28890000	usd
CY2020	us-gaap	Contractually Specified Servicing Fees Amount ContractuallySpecifiedServicingFeesAmount	22128000	usd
CY2022	fbk	Change In Fair Value Of Mortgage Servicing Rights ChangeInFairValueOfMortgageServicingRights	-32044000	usd
CY2021	fbk	Change In Fair Value Of Mortgage Servicing Rights ChangeInFairValueOfMortgageServicingRights	3503000	usd
CY2020	fbk	Change In Fair Value Of Mortgage Servicing Rights ChangeInFairValueOfMortgageServicingRights	47660000	usd
CY2022	fbk	Change In Fair Value Of Derivative Hedging Instruments ChangeInFairValueOfDerivativeHedgingInstruments	42143000	usd
CY2021	fbk	Change In Fair Value Of Derivative Hedging Instruments ChangeInFairValueOfDerivativeHedgingInstruments	8614000	usd
CY2020	fbk	Change In Fair Value Of Derivative Hedging Instruments ChangeInFairValueOfDerivativeHedgingInstruments	-13286000	usd
CY2022	fbk	Contractually Specified Servicing Fee Late Fee And Ancillary Fee Earned In Exchange For Servicing Financial Asset Liabilities ContractuallySpecifiedServicingFeeLateFeeAndAncillaryFeeEarnedInExchangeForServicingFinancialAssetLiabilities	20664000	usd
CY2021	fbk	Contractually Specified Servicing Fee Late Fee And Ancillary Fee Earned In Exchange For Servicing Financial Asset Liabilities ContractuallySpecifiedServicingFeeLateFeeAndAncillaryFeeEarnedInExchangeForServicingFinancialAssetLiabilities	16773000	usd
CY2020	fbk	Contractually Specified Servicing Fee Late Fee And Ancillary Fee Earned In Exchange For Servicing Financial Asset Liabilities ContractuallySpecifiedServicingFeeLateFeeAndAncillaryFeeEarnedInExchangeForServicingFinancialAssetLiabilities	-12246000	usd
CY2022	fbk	Gross Servicing Expense GrossServicingExpense	10259000	usd
CY2021	fbk	Gross Servicing Expense GrossServicingExpense	9862000	usd
CY2020	fbk	Gross Servicing Expense GrossServicingExpense	7890000	usd
CY2022	fbk	Servicing Income Loss ServicingIncomeLoss	10405000	usd
CY2021	fbk	Servicing Income Loss ServicingIncomeLoss	6911000	usd
CY2020	fbk	Servicing Income Loss ServicingIncomeLoss	-20136000	usd
CY2022Q4	us-gaap	Continuing Involvement With Transferred Financial Assets Principal Amount Outstanding ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding	11086582000	usd
CY2021Q4	us-gaap	Continuing Involvement With Transferred Financial Assets Principal Amount Outstanding ContinuingInvolvementWithTransferredFinancialAssetsPrincipalAmountOutstanding	10759286000	usd
CY2022	us-gaap	Assumption For Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Prepayment Speed AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesPrepaymentSpeed	0.0555
CY2021	us-gaap	Assumption For Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Prepayment Speed AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesPrepaymentSpeed	0.0931
CY2022Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of10 Percent Adverse Change In Prepayment Speed SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf10PercentAdverseChangeInPrepaymentSpeed	4886000	usd
CY2021Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of10 Percent Adverse Change In Prepayment Speed SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf10PercentAdverseChangeInPrepaymentSpeed	4905000	usd
CY2022Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of20 Percent Adverse Change In Prepayment Speed SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf20PercentAdverseChangeInPrepaymentSpeed	9447000	usd
CY2021Q4	us-gaap	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of20 Percent Adverse Change In Prepayment Speed SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOf20PercentAdverseChangeInPrepaymentSpeed	9429000	usd
CY2022	us-gaap	Assumption For Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Discount Rate AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesDiscountRate	0.0910
CY2021	us-gaap	Assumption For Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Discount Rate AssumptionForFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesDiscountRate	0.0981
CY2022Q4	fbk	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transfer Or Servicing Assets Or Liabilities Impact Of One Percent Adverse Change In Discount Rate SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferOrServicingAssetsOrLiabilitiesImpactOfOnePercentAdverseChangeInDiscountRate	8087000	usd
CY2021Q4	fbk	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transfer Or Servicing Assets Or Liabilities Impact Of One Percent Adverse Change In Discount Rate SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferOrServicingAssetsOrLiabilitiesImpactOfOnePercentAdverseChangeInDiscountRate	4785000	usd
CY2022Q4	fbk	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of Two Percent Adverse Change In Discount Rate SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOfTwoPercentAdverseChangeInDiscountRate	15475000	usd
CY2021Q4	fbk	Sensitivity Analysis Of Fair Value Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities Impact Of Two Percent Adverse Change In Discount Rate SensitivityAnalysisOfFairValueOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesImpactOfTwoPercentAdverseChangeInDiscountRate	9198000	usd
CY2022	fbk	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Coupon Interest Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageCouponInterestRate	0.0331
CY2021	fbk	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Coupon Interest Rate ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageCouponInterestRate	0.0323
CY2022	fbk	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Servicing Fee ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageServicingFee	0.0027
CY2021	fbk	Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value Weighted Average Servicing Fee ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueWeightedAverageServicingFee	0.0027
CY2022	us-gaap	Assumption For Fair Value Of Assets Or Liabilities That Relate To Transferors Continuing Involvement Weighted Average Life1 AssumptionForFairValueOfAssetsOrLiabilitiesThatRelateToTransferorsContinuingInvolvementWeightedAverageLife1	P332M
CY2021	us-gaap	Assumption For Fair Value Of Assets Or Liabilities That Relate To Transferors Continuing Involvement Weighted Average Life1 AssumptionForFairValueOfAssetsOrLiabilitiesThatRelateToTransferorsContinuingInvolvementWeightedAverageLife1	P330M
CY2022Q4	us-gaap	Escrow Deposit EscrowDeposit	75612000	usd
CY2021Q4	us-gaap	Escrow Deposit EscrowDeposit	127617000	usd
CY2022Q4	us-gaap	Prepaid Expense Current And Noncurrent PrepaidExpenseCurrentAndNoncurrent	9280000	usd
CY2021Q4	us-gaap	Prepaid Expense Current And Noncurrent PrepaidExpenseCurrentAndNoncurrent	12371000	usd
CY2022Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	108000	usd
CY2021Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	578000	usd
CY2022Q4	fbk	Mortgage Lending Receivable MortgageLendingReceivable	14425000	usd
CY2021Q4	fbk	Mortgage Lending Receivable MortgageLendingReceivable	16087000	usd
CY2022Q4	us-gaap	Derivative Assets DerivativeAssets	48769000	usd
CY2021Q4	us-gaap	Derivative Assets DerivativeAssets	27384000	usd
CY2022Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	42412000	usd
CY2021Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	0	usd
CY2022Q4	fbk	Deposits With Federal Home Loan Banks DepositsWithFederalHomeLoanBanks	19737000	usd
CY2021Q4	fbk	Deposits With Federal Home Loan Banks DepositsWithFederalHomeLoanBanks	17130000	usd
CY2022Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	23325000	usd
CY2021Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	57868000	usd
CY2022Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	22496000	usd
CY2021Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	8868000	usd
CY2022Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	7373000	usd
CY2021Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	26698000	usd
CY2022Q4	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	40031000	usd
CY2021Q4	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	5252000	usd
CY2022Q4	us-gaap	Other Assets OtherAssets	227956000	usd
CY2021Q4	us-gaap	Other Assets OtherAssets	172236000	usd
CY2022Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	2424000	usd
CY2021Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	2487000	usd
CY2022Q4	us-gaap	Employee Related Liabilities Current And Noncurrent EmployeeRelatedLiabilitiesCurrentAndNoncurrent	13592000	usd
CY2021Q4	us-gaap	Employee Related Liabilities Current And Noncurrent EmployeeRelatedLiabilitiesCurrentAndNoncurrent	22138000	usd
CY2022Q4	us-gaap	Participating Mortgage Loans Mortgage Obligations Amount ParticipatingMortgageLoansMortgageObligationsAmount	1621000	usd
CY2021Q4	us-gaap	Participating Mortgage Loans Mortgage Obligations Amount ParticipatingMortgageLoansMortgageObligationsAmount	4802000	usd
CY2022Q4	us-gaap	Deposit Liabilities Accrued Interest DepositLiabilitiesAccruedInterest	8648000	usd
CY2021Q4	us-gaap	Deposit Liabilities Accrued Interest DepositLiabilitiesAccruedInterest	3162000	usd
CY2022Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	63229000	usd
CY2021Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	21000000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	0	usd
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	6820000	usd
CY2022Q4	fbk	Risk Account Guaranty RiskAccountGuaranty	9558000	usd
CY2021Q4	fbk	Risk Account Guaranty RiskAccountGuaranty	8372000	usd
CY2022Q4	fbk	Financing Receivable Allowance For Credit Loss Unfunded Commitments FinancingReceivableAllowanceForCreditLossUnfundedCommitments	22969000	usd
CY2021Q4	fbk	Financing Receivable Allowance For Credit Loss Unfunded Commitments FinancingReceivableAllowanceForCreditLossUnfundedCommitments	14380000	usd
CY2022Q4	us-gaap	Other Sundry Liabilities OtherSundryLiabilities	58932000	usd
CY2021Q4	us-gaap	Other Sundry Liabilities OtherSundryLiabilities	26788000	usd
CY2022Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	180973000	usd
CY2021Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	109949000	usd
CY2022Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	556537000	usd
CY2021Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	303289000	usd
CY2022Q4	us-gaap	Time Deposit Maturities Next Rolling Twelve Months TimeDepositMaturitiesNextRollingTwelveMonths	873327000	usd
CY2022Q4	us-gaap	Time Deposit Maturities Rolling Year Two TimeDepositMaturitiesRollingYearTwo	480005000	usd
CY2022Q4	us-gaap	Time Deposit Maturities Rolling Year Three TimeDepositMaturitiesRollingYearThree	34766000	usd
CY2022Q4	us-gaap	Time Deposit Maturities Rolling Year Four TimeDepositMaturitiesRollingYearFour	19073000	usd
CY2022Q4	us-gaap	Time Deposit Maturities Rolling Year Five TimeDepositMaturitiesRollingYearFive	14687000	usd
CY2022Q4	us-gaap	Time Deposit Maturities After Rolling Year Five TimeDepositMaturitiesAfterRollingYearFive	116000	usd
CY2022Q4	us-gaap	Time Deposits TimeDeposits	1421974000	usd
CY2022Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	5725000	usd
CY2021Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	2574000	usd
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	415677000	usd
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	171778000	usd
CY2022Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	21945000	usd
CY2021Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	40716000	usd
CY2022	srt	Securities Sold Under Agreements To Repurchase Average Rate Paid SecuritiesSoldUnderAgreementsToRepurchaseAverageRatePaid	0.0018
CY2021	srt	Securities Sold Under Agreements To Repurchase Average Rate Paid SecuritiesSoldUnderAgreementsToRepurchaseAverageRatePaid	0.0021
CY2022Q4	fbk	Securities Sold Under Agreements To Repurchase Fair Value Of Collateral Percentage Of Outstanding Balance SecuritiesSoldUnderAgreementsToRepurchaseFairValueOfCollateralPercentageOfOutstandingBalance	1
CY2022	us-gaap	Schedule Of Repurchase Agreements ScheduleOfRepurchaseAgreements	<span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Information concerning securities sold under agreement to repurchase and federal funds purchased is summarized as follows: </span><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"/><td style="width:47.372%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:23.900%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:1.327%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:23.901%"/><td style="width:0.1%"/></tr><tr><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"/><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:700;line-height:100%">December 31, 2022</span></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"/><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:700;line-height:100%">December 31, 2021</span></td></tr><tr><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Balance at year end</span></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">86,945 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000;padding:0 1pt"/><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">40,716 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Average daily balance during the year</span></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">28,497 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">36,453 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Average interest rate during the year</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">0.23 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">%</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">0.27 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">%</span></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Maximum month-end balance during the year</span></td><td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">86,945 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">41,730 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;border-bottom:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Weighted average interest rate at year-end</span></td><td colspan="2" style="background-color:#cceeff;border-bottom:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">3.78 </span></td><td style="background-color:#cceeff;border-bottom:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">%</span></td><td colspan="3" style="background-color:#cceeff;border-bottom:1pt solid #000;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;border-bottom:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">0.21 </span></td><td style="background-color:#cceeff;border-bottom:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%">%</span></td></tr></table>
CY2022Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	86945000	usd
CY2021Q4	us-gaap	Federal Funds Purchased And Securities Sold Under Agreements To Repurchase FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase	40716000	usd
CY2022	fbk	Debt Instrument Average Daily Balance During Period DebtInstrumentAverageDailyBalanceDuringPeriod	28497000	usd
CY2021	fbk	Debt Instrument Average Daily Balance During Period DebtInstrumentAverageDailyBalanceDuringPeriod	36453000	usd
CY2022	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.0023
CY2021	us-gaap	Debt Instrument Interest Rate During Period DebtInstrumentInterestRateDuringPeriod	0.0027
CY2022	fbk	Debt Instrument Maximum Month End Balance During Year DebtInstrumentMaximumMonthEndBalanceDuringYear	86945000	usd
CY2021	fbk	Debt Instrument Maximum Month End Balance During Year DebtInstrumentMaximumMonthEndBalanceDuringYear	41730000	usd
CY2022Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0378
CY2021Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.0021
CY2022Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	1270240000	usd
CY2021Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	1233254000	usd
CY2022Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	2673464000	usd
CY2021Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	2717967000	usd
CY2021Q4	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	0	usd
CY2021Q4	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	0	usd
CY2022Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	175000000	usd
CY2022	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Balance Of Agreements Outstanding FederalHomeLoanBankAdvancesActivityForYearAverageBalanceOfAgreementsOutstanding	171142000	usd
CY2022	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate For Year FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateForYear	0.0326
CY2022Q4	us-gaap	Federal Home Loan Bank Advances Activity For Year Maximum Outstanding At Any Month End FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd	540000000	usd
CY2022Q4	us-gaap	Federal Home Loan Bank Advances Weighted Average Interest Rate FederalHomeLoanBankAdvancesWeightedAverageInterestRate	0.0444
CY2022Q4	us-gaap	Subordinated Debt SubordinatedDebt	126101000	usd
CY2022Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	1420000	usd
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	1518000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	22451000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	21980000	usd
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	44362000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	12552000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	30770000	usd
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-25530000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35003000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	52750000	usd
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18832000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	33510000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	51041000	usd
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	17317000	usd
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2022	fbk	Income Tax Reconciliation Change In State Taxes Net Of Federal Benefit IncomeTaxReconciliationChangeInStateTaxesNetOfFederalBenefit	3845000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.024
CY2021	fbk	Income Tax Reconciliation Change In State Taxes Net Of Federal Benefit IncomeTaxReconciliationChangeInStateTaxesNetOfFederalBenefit	8788000	usd
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.035
CY2020	fbk	Income Tax Reconciliation Change In State Taxes Net Of Federal Benefit IncomeTaxReconciliationChangeInStateTaxesNetOfFederalBenefit	3197000	usd
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.038
CY2022	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-392000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.002
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-2719000	usd
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.011
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	153000	usd
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.002
CY2022	fbk	Effective Income Tax Rate Reconciliation Municipal Interest Income Net Of Interest Disallowance Amount EffectiveIncomeTaxRateReconciliationMunicipalInterestIncomeNetOfInterestDisallowanceAmount	1774000	usd
CY2022	fbk	Effective Income Tax Rate Reconciliation Municipal Interest Income Net Of Interest Disallowance Percent EffectiveIncomeTaxRateReconciliationMunicipalInterestIncomeNetOfInterestDisallowancePercent	0.011
CY2021	fbk	Effective Income Tax Rate Reconciliation Municipal Interest Income Net Of Interest Disallowance Amount EffectiveIncomeTaxRateReconciliationMunicipalInterestIncomeNetOfInterestDisallowanceAmount	1818000	usd
CY2021	fbk	Effective Income Tax Rate Reconciliation Municipal Interest Income Net Of Interest Disallowance Percent EffectiveIncomeTaxRateReconciliationMunicipalInterestIncomeNetOfInterestDisallowancePercent	0.008
CY2020	fbk	Effective Income Tax Rate Reconciliation Municipal Interest Income Net Of Interest Disallowance Amount EffectiveIncomeTaxRateReconciliationMunicipalInterestIncomeNetOfInterestDisallowanceAmount	1507000	usd
CY2020	fbk	Effective Income Tax Rate Reconciliation Municipal Interest Income Net Of Interest Disallowance Percent EffectiveIncomeTaxRateReconciliationMunicipalInterestIncomeNetOfInterestDisallowancePercent	0.018
CY2022	fbk	Income Tax Reconciliation Bank Owned Life Insurance IncomeTaxReconciliationBankOwnedLifeInsurance	305000	usd
CY2022	fbk	Effective Income Tax Rate Reconciliation Bank Owned Life Insurance Percent EffectiveIncomeTaxRateReconciliationBankOwnedLifeInsurancePercent	0.002
CY2021	fbk	Income Tax Reconciliation Bank Owned Life Insurance IncomeTaxReconciliationBankOwnedLifeInsurance	324000	usd
CY2021	fbk	Effective Income Tax Rate Reconciliation Bank Owned Life Insurance Percent EffectiveIncomeTaxRateReconciliationBankOwnedLifeInsurancePercent	0.001
CY2020	fbk	Income Tax Reconciliation Bank Owned Life Insurance IncomeTaxReconciliationBankOwnedLifeInsurance	327000	usd
CY2020	fbk	Effective Income Tax Rate Reconciliation Bank Owned Life Insurance Percent EffectiveIncomeTaxRateReconciliationBankOwnedLifeInsurancePercent	0.004
CY2022	fbk	Effective Income Tax Reconciliation Operating Loss Carryback Cares Act Amount EffectiveIncomeTaxReconciliationOperatingLossCarrybackCARESActAmount	0	usd
CY2022	fbk	Effective Income Tax Reconciliation Operating Loss Carryback Cares Act Percent EffectiveIncomeTaxReconciliationOperatingLossCarrybackCARESActPercent	0
CY2021	fbk	Effective Income Tax Reconciliation Operating Loss Carryback Cares Act Amount EffectiveIncomeTaxReconciliationOperatingLossCarrybackCARESActAmount	3424000	usd
CY2021	fbk	Effective Income Tax Reconciliation Operating Loss Carryback Cares Act Percent EffectiveIncomeTaxReconciliationOperatingLossCarrybackCARESActPercent	0.014
CY2020	fbk	Effective Income Tax Reconciliation Operating Loss Carryback Cares Act Amount EffectiveIncomeTaxReconciliationOperatingLossCarrybackCARESActAmount	0	usd
CY2020	fbk	Effective Income Tax Reconciliation Operating Loss Carryback Cares Act Percent EffectiveIncomeTaxReconciliationOperatingLossCarrybackCARESActPercent	0
CY2022	fbk	Income Tax Reconciliation Change In Merger And Offering Costs IncomeTaxReconciliationChangeInMergerAndOfferingCosts	0	usd
CY2022	fbk	Effective Income Tax Rate Reconciliation Nondeductible Expense Merger And Offering Costs EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMergerAndOfferingCosts	0
CY2021	fbk	Income Tax Reconciliation Change In Merger And Offering Costs IncomeTaxReconciliationChangeInMergerAndOfferingCosts	123000	usd
CY2021	fbk	Effective Income Tax Rate Reconciliation Nondeductible Expense Merger And Offering Costs EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMergerAndOfferingCosts	0.001
CY2020	fbk	Income Tax Reconciliation Change In Merger And Offering Costs IncomeTaxReconciliationChangeInMergerAndOfferingCosts	289000	usd
CY2020	fbk	Effective Income Tax Rate Reconciliation Nondeductible Expense Merger And Offering Costs EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMergerAndOfferingCosts	0.004
CY2022	fbk	Income Tax Reconciliation Nondeductible Income Share Based Compensation Cost IncomeTaxReconciliationNondeductibleIncomeShareBasedCompensationCost	241000	usd
CY2022	fbk	Income Tax Reconciliation Nondeductible Income Share Based Compensation Cost Percent IncomeTaxReconciliationNondeductibleIncomeShareBasedCompensationCostPercent	0.001
CY2021	fbk	Income Tax Reconciliation Nondeductible Income Share Based Compensation Cost IncomeTaxReconciliationNondeductibleIncomeShareBasedCompensationCost	1381000	usd
CY2021	fbk	Income Tax Reconciliation Nondeductible Income Share Based Compensation Cost Percent IncomeTaxReconciliationNondeductibleIncomeShareBasedCompensationCostPercent	0.006
CY2020	fbk	Income Tax Reconciliation Nondeductible Income Share Based Compensation Cost IncomeTaxReconciliationNondeductibleIncomeShareBasedCompensationCost	0	usd
CY2020	fbk	Income Tax Reconciliation Nondeductible Income Share Based Compensation Cost Percent IncomeTaxReconciliationNondeductibleIncomeShareBasedCompensationCostPercent	0
CY2022	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-122000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.001
CY2021	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-298000	usd
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.001
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-290000	usd
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.004
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35003000	usd
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.219
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	52750000	usd
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.217
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18832000	usd
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.228
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	38646000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	35233000	usd
CY2022Q4	fbk	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	25882000	usd
CY2021Q4	fbk	Deferred Tax Assets Operating Lease Liability DeferredTaxAssetsOperatingLeaseLiability	12478000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	1088000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	1370000	usd
CY2022Q4	fbk	Deferred Tax Assets Amortization Of Core Deposit Intangible DeferredTaxAssetsAmortizationOfCoreDepositIntangible	653000	usd
CY2021Q4	fbk	Deferred Tax Assets Amortization Of Core Deposit Intangible DeferredTaxAssetsAmortizationOfCoreDepositIntangible	0	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	5245000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	5484000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	61004000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	0	usd
CY2022Q4	fbk	Deferred Tax Assets Unrealized Losses On Cash Flow Hedges DeferredTaxAssetsUnrealizedLossesOnCashFlowHedges	0	usd
CY2021Q4	fbk	Deferred Tax Assets Unrealized Losses On Cash Flow Hedges DeferredTaxAssetsUnrealizedLossesOnCashFlowHedges	205000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	6691000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	8301000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	139209000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	63071000	usd
CY2022Q4	fbk	Deferred Tax Liabilities Federal Home Loan Bank Stock Dividends DeferredTaxLiabilitiesFederalHomeLoanBankStockDividends	484000	usd
CY2021Q4	fbk	Deferred Tax Liabilities Federal Home Loan Bank Stock Dividends DeferredTaxLiabilitiesFederalHomeLoanBankStockDividends	484000	usd
CY2022Q4	fbk	Deferred Tax Liabilities Operating Lease Right Of Use Asset DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset	24478000	usd
CY2021Q4	fbk	Deferred Tax Liabilities Operating Lease Right Of Use Asset DeferredTaxLiabilitiesOperatingLeaseRightOfUseAsset	11287000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	7274000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	7938000	usd
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CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6820000	usd
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CY2021Q4	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments Without Regulatory Approval StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval	170769000	usd
CY2022	us-gaap	Dividends Cash DividendsCash	49000000	usd
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CY2020	us-gaap	Dividends Cash DividendsCash	48750000	usd
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CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	44273000	usd
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CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	15733000	usd
CY2022Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	14229000	usd
CY2021Q4	us-gaap	Derivative Collateral Obligation To Return Securities DerivativeCollateralObligationToReturnSecurities	4297000	usd
CY2022Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	14229000	usd
CY2021Q4	us-gaap	Derivative Collateral Right To Reclaim Securities DerivativeCollateralRightToReclaimSecurities	4297000	usd
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CY2021Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	usd
CY2022Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	6022000	usd
CY2021Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	11436000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	30044000	usd
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	693000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	0	usd
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	0	usd
CY2022Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	23325000	usd
CY2021Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	57868000	usd
CY2022	fbk	Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain Loss Statement Of Income Extensible List Not Disclosed Flag FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfIncomeExtensibleListNotDisclosedFlag	Changes in valuation included in other noninterest income
CY2022	fbk	Financing Receivable And Unfunded Commitments Credit Loss Expense Reversal FinancingReceivableAndUnfundedCommitmentsCreditLossExpenseReversal	18982000	usd
CY2022	fbk	Fees And Commissions Mortgage Banking Before Adjustments FeesAndCommissionsMortgageBankingBeforeAdjustments	83679000	usd
CY2021	fbk	Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain Loss Statement Of Income Extensible List Not Disclosed Flag FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfIncomeExtensibleListNotDisclosedFlag	Changes in valuation included in other noninterest income
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CY2022	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
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CY2022	fbk	Number Of Delivery Channels NumberOfDeliveryChannels	2	channel
CY2022	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	412235000	usd
CY2022	fbk	Change In Fair Value Of Mortgage Servicing Rights And Hedging Instruments ChangeInFairValueOfMortgageServicingRightsAndHedgingInstruments	10099000	usd
CY2022	us-gaap	Noninterest Income Other NoninterestIncomeOther	41087000	usd
CY2022	us-gaap	Depreciation And Amortization DepreciationAndAmortization	8017000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4585000	usd
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CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	159574000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35003000	usd
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CY2022	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	16000	usd
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CY2022	fbk	Unfunded Commitments Credit Loss Expense Reversal UnfundedCommitmentsCreditLossExpenseReversal	8589000	usd
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CY2021	fbk	Financing Receivable And Unfunded Commitments Credit Loss Expense Reversal FinancingReceivableAndUnfundedCommitmentsCreditLossExpenseReversal	-40993000	usd
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CY2021	fbk	Change In Fair Value Of Mortgage Servicing Rights And Hedging Instruments ChangeInFairValueOfMortgageServicingRightsAndHedgingInstruments	12117000	usd
CY2021	us-gaap	Noninterest Income Other NoninterestIncomeOther	60690000	usd
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	8416000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5473000	usd
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CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	243051000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	52750000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	190301000	usd
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CY2021Q4	us-gaap	Assets Assets	12597686000	usd
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CY2021	fbk	Unfunded Commitments Credit Loss Expense Reversal UnfundedCommitmentsCreditLossExpenseReversal	-1998000	usd
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CY2020	fbk	Financing Receivable And Unfunded Commitments Credit Loss Expense Reversal FinancingReceivableAndUnfundedCommitmentsCreditLossExpenseReversal	107967000	usd
CY2020	fbk	Fees And Commissions Mortgage Banking Before Adjustments FeesAndCommissionsMortgageBankingBeforeAdjustments	289702000	usd
CY2020	fbk	Change In Fair Value Of Mortgage Servicing Rights And Hedging Instruments ChangeInFairValueOfMortgageServicingRightsAndHedgingInstruments	34374000	usd
CY2020	us-gaap	Noninterest Income Other NoninterestIncomeOther	46527000	usd
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	7536000	usd
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5323000	usd
CY2020	us-gaap	Other Noninterest Expense OtherNoninterestExpense	364226000	usd
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	82461000	usd
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18832000	usd
CY2020	us-gaap	Profit Loss ProfitLoss	63629000	usd
CY2020	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	8000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	63621000	usd
CY2020Q4	us-gaap	Assets Assets	11207330000	usd
CY2020Q4	us-gaap	Goodwill Goodwill	242561000	usd
CY2020	fbk	Unfunded Commitments Credit Loss Expense Reversal UnfundedCommitmentsCreditLossExpenseReversal	13361000	usd
CY2022	us-gaap	Defined Contribution Plan Employers Matching Contribution Annual Vesting Percentage DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage	0.50
CY2022	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.06
CY2022	fbk	Matching And Profit Sharing Vesting Period MatchingAndProfitSharingVestingPeriod	P3Y
CY2022	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	3686000	usd
CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	3923000	usd
CY2020	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	3198000	usd
CY2022Q4	fbk	Post Retirement Benefits Payable PostRetirementBenefitsPayable	2424000	usd
CY2021Q4	fbk	Post Retirement Benefits Payable PostRetirementBenefitsPayable	2487000	usd
CY2022	fbk	Defined Benefit Plan Expenses DefinedBenefitPlanExpenses	119000	usd
CY2021	fbk	Defined Benefit Plan Expenses DefinedBenefitPlanExpenses	94000	usd
CY2020	fbk	Defined Benefit Plan Expenses DefinedBenefitPlanExpenses	29000	usd
CY2022	fbk	Not Found During Migration Deprecated Concept Defined Benefit Plan Benefits Paid NotFoundDuringMigrationDeprecatedConceptDefinedBenefitPlanBenefitsPaid	181000	usd
CY2021	fbk	Not Found During Migration Deprecated Concept Defined Benefit Plan Benefits Paid NotFoundDuringMigrationDeprecatedConceptDefinedBenefitPlanBenefitsPaid	172000	usd
CY2020	fbk	Not Found During Migration Deprecated Concept Defined Benefit Plan Benefits Paid NotFoundDuringMigrationDeprecatedConceptDefinedBenefitPlanBenefitsPaid	131000	usd
CY2022Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	75329000	usd
CY2021Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	73519000	usd
CY2022	fbk	Defined Benefit Plan Cash Value Income DefinedBenefitPlanCashValueIncome	1452000	usd
CY2021	fbk	Defined Benefit Plan Cash Value Income DefinedBenefitPlanCashValueIncome	1542000	usd
CY2020	fbk	Defined Benefit Plan Cash Value Income DefinedBenefitPlanCashValueIncome	1556000	usd
CY2022	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1087000	usd
CY2021	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	1190000	usd
CY2020	us-gaap	Proceeds From Stock Plans ProceedsFromStockPlans	919000	usd
CY2021Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	29010000	usd
CY2022	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	67024000	usd
CY2022	fbk	Loans And Leases Receivable Related Parties Changes In Related Party Status LoansAndLeasesReceivableRelatedPartiesChangesInRelatedPartyStatus	9939000	usd
CY2022	us-gaap	Loans And Leases Receivable Related Parties Proceeds LoansAndLeasesReceivableRelatedPartiesProceeds	3536000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	82559000	usd
CY2022Q4	us-gaap	Related Party Deposit Liabilities RelatedPartyDepositLiabilities	347660000	usd
CY2021Q4	us-gaap	Related Party Deposit Liabilities RelatedPartyDepositLiabilities	312956000	usd

Files In Submission

Name	View Source	Status
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2023 Q1 Form 10-K Financial Statement

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2023 Q1 Form 10-K Financial Statement

#000164974923000047 Filed on February 28, 2023

Income Statement

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