$FUSB
FIRST US BANCSHARES, INC. Stock $fusb

$fusb Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000156459020011613 Filed on March 18, 2020

Income Statement

Concept	2019 Q4	2019	2018 Q4
Revenue	$10.83M	$43.59M	$11.18M
YoY Change	-3.15%	5348.5%	38.21%
Cost Of Revenue		$310.0K
YoY Change		-36.99%
Gross Profit		$43.28M
YoY Change		13951.3%
Gross Profit Margin		99.29%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development		$867.0K
YoY Change		6.91%
% of Gross Profit		2.0%
Depreciation & Amortization	$510.0K	$2.100M	$510.0K
YoY Change	0.0%	28.83%	45.71%
% of Gross Profit		4.85%
Operating Expenses		$6.499M
YoY Change		8.95%
Operating Profit		$36.78M
YoY Change		-750.15%
Interest Expense	$1.636M	$6.646M	$1.533M
YoY Change	6.72%	52.78%	90.67%
% of Operating Profit		18.07%
Other Income/Expense, Net
YoY Change
Pretax Income	$1.590M	$5.812M	$1.947M
YoY Change	-18.34%	71.39%	165.26%
Income Tax	$381.0K	$1.250M	$470.0K
% Of Pretax Income	23.96%	21.51%	24.14%
Net Earnings	$1.209M	$4.566M	$1.477M
YoY Change	-18.14%	83.37%	-179.15%
Net Earnings / Revenue	11.17%	10.48%	13.21%
Basic Earnings Per Share	$0.19	$0.71	$0.23
Diluted Earnings Per Share	$0.18	$0.67	$0.22
COMMON SHARES
Basic Shares Outstanding	6.222M	6.387M
Diluted Shares Outstanding		6.800M

Balance Sheet

Concept	2019 Q4	2019	2018 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$165.4M		$203.5M
YoY Change	-18.75%		-1.8%
Cash & Equivalents	$57.03M		$49.60M
Short-Term Investments	$108.4M		$153.9M
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$29.22M	$29.20M	$27.64M
YoY Change	5.69%	5.8%	4.58%
Goodwill	$7.400M		$7.400M
YoY Change	0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$788.7M	$788.7M	$791.9M
YoY Change	-0.4%	-0.4%	26.59%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$500.0K	$500.0K	$400.0K
YoY Change	25.0%	25.0%	0.0%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$10.03M	$10.00M	$527.0K
YoY Change	1802.28%	1900.0%	-96.62%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$500.0K	$500.0K	$400.0K
YoY Change	25.0%	25.0%	0.0%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$9.800M	$9.800M	$6.800M
YoY Change	44.12%	44.12%	7.94%
Total Long-Term Liabilities	$9.800M	$9.800M	$6.800M
YoY Change	44.12%	44.12%	7.94%
TOTAL LIABILITIES
Total Short-Term Liabilities	$500.0K	$500.0K	$400.0K
Total Long-Term Liabilities	$9.800M	$9.800M	$6.800M
Total Liabilities	$704.0M	$704.0M	$712.5M
YoY Change	-1.19%	-1.19%	29.69%
SHAREHOLDERS EQUITY
Retained Earnings	$92.76M		$88.67M
YoY Change	4.61%		2.3%
Common Stock	$13.89M		$13.57M
YoY Change	2.34%		25.33%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$21.85M		$20.41M
YoY Change	7.03%		0.0%
Treasury Stock Shares	$1.410M		$1.264M
Shareholders Equity	$84.70M	$84.70M	$79.40M
YoY Change
Total Liabilities & Shareholders Equity	$788.7M	$788.7M	$791.9M
YoY Change	-0.4%	-0.4%	26.59%

Cashflow Statement

Concept	2019 Q4	2019	2018 Q4
OPERATING ACTIVITIES
Net Income	$1.209M	$4.566M	$1.477M
YoY Change	-18.14%	83.37%	-179.15%
Depreciation, Depletion And Amortization	$510.0K	$2.100M	$510.0K
YoY Change	0.0%	28.83%	45.71%
Cash From Operating Activities	$2.740M	$11.32M	$500.0K
YoY Change	448.0%	40.31%	-63.5%
INVESTING ACTIVITIES
Capital Expenditures	-$320.0K	$3.184M	-$900.0K
YoY Change	-64.44%	105.55%	69.81%
Acquisitions
YoY Change
Other Investing Activities	$4.230M	$12.91M	$13.04M
YoY Change	-67.56%	203.76%	-165.89%
Cash From Investing Activities	$3.890M	$9.721M	$12.14M
YoY Change	-67.96%	259.77%	-159.74%
FINANCING ACTIVITIES
Cash Dividend Paid		$562.0K
YoY Change		13.54%
Common Stock Issuance & Retirement, Net		$1.478M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	14.96M	-13.61M	-13.13M
YoY Change	-213.94%	-216.19%	-197.04%
NET CHANGE
Cash From Operating Activities	2.740M	11.32M	500.0K
Cash From Investing Activities	3.890M	9.721M	12.14M
Cash From Financing Activities	14.96M	-13.61M	-13.13M
Net Change In Cash	21.59M	7.431M	-490.0K
YoY Change	-4506.12%	-66.94%	-90.96%
FREE CASH FLOW
Cash From Operating Activities	$2.740M	$11.32M	$500.0K
Capital Expenditures	-$320.0K	$3.184M	-$900.0K
Free Cash Flow	$3.060M	$8.131M	$1.400M
YoY Change	118.57%	24.8%	-26.32%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2020Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	6143286
CY2019	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2019	dei	Trading Symbol TradingSymbol	FUSB
CY2018Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	9796000
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	39803000
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	3291 U.S. Highway 280
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Birmingham
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	AL
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	35243
CY2019	dei	City Area Code CityAreaCode	205
CY2019	dei	Local Phone Number LocalPhoneNumber	582-1200
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	49599000
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2018Q4	us-gaap	Federal Funds Sold FederalFundsSold	8354000
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000717806
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2019	dei	Entity File Number EntityFileNumber	0-14549
CY2019	us-gaap	Interest Expense InterestExpense	6646000
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Registrant Name EntityRegistrantName	FIRST US BANCSHARES INC
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Entity Small Business EntitySmallBusiness	true
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	63-0843362
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	us-gaap	Interest Expense Deposits InterestExpenseDeposits	6554000
CY2018	us-gaap	Interest Expense InterestExpense	4350000
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2019	dei	Security12b Title Security12bTitle	Common Stock, par value $0.01 per share
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019Q2	dei	Entity Public Float EntityPublicFloat	54663304
CY2019Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	11939000
CY2019Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	45091000
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	57030000
CY2019Q4	us-gaap	Federal Funds Sold FederalFundsSold	10080000
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	94016000
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	132487000
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	14340000
CY2019Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	1137000
CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	545243000
CY2018Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	514867000
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	29216000
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	27643000
CY2019Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	15546000
CY2018Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	15237000
CY2019Q4	us-gaap	Interest Receivable InterestReceivable	2488000
CY2019Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	8825000
CY2018Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	9312000
CY2019Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	1078000
CY2019Q4	us-gaap	Other Assets OtherAssets	9739000
CY2019Q4	us-gaap	Assets Assets	788738000
CY2019Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	112729000
CY2019Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	570933000
CY2019Q4	us-gaap	Deposits Deposits	683662000
CY2019Q4	us-gaap	Deposit Liabilities Accrued Interest DepositLiabilitiesAccruedInterest	537000
CY2019Q4	us-gaap	Other Liabilities OtherLiabilities	9766000
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	10025000
CY2019Q4	us-gaap	Liabilities Liabilities	703990000
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	75000
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	13814000
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-46000
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	92755000
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	21850000
CY2018Q4	us-gaap	Minority Interest MinorityInterest	-11000
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	10000000
CY2019	us-gaap	Interest And Dividend Income Securities Other InterestAndDividendIncomeSecuritiesOther	1188000
CY2018	us-gaap	Interest And Dividend Income Securities Other InterestAndDividendIncomeSecuritiesOther	817000
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	32788000
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	981000
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2331000
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	6897000
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-362000
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-1176000
CY2018	us-gaap	Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease After Adjustments Tax Noncontrolling Interest1 OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsTaxNoncontrollingInterest1	-333000
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	495000
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	444000
CY2018Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	21462000
CY2018Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	703000
CY2018Q4	us-gaap	Interest Receivable InterestReceivable	2816000
CY2018Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	1505000
CY2018Q4	us-gaap	Other Assets OtherAssets	7954000
CY2018Q4	us-gaap	Assets Assets	791939000
CY2018Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	109050000
CY2018Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	595675000
CY2018Q4	us-gaap	Deposits Deposits	704725000
CY2018Q4	us-gaap	Deposit Liabilities Accrued Interest DepositLiabilitiesAccruedInterest	424000
CY2018Q4	us-gaap	Other Liabilities OtherLiabilities	6826000
CY2018Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	527000
CY2018Q4	us-gaap	Liabilities Liabilities	712502000
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	75000
CY2018Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	13496000
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2377000
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	88668000
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	20414000
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	84748000
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	79437000
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	788738000
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	791939000
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	5762000
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	5055000
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	22570000
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	21437000
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	10000000
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	7568053
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	7562264
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	6157692
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	6298062
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1410361
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1264202
CY2019	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	39635000
CY2018	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	32899000
CY2019	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	2710000
CY2018	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	3290000
CY2019	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	55000
CY2018	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	132000
CY2018	us-gaap	Interest Expense Deposits InterestExpenseDeposits	4151000
CY2019	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	92000
CY2018	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	115000
CY2019	us-gaap	Noninterest Expense NoninterestExpense	33782000
CY2019	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	34228000
CY2019	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	549000
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	92000
CY2019	us-gaap	Noninterest Income Other NoninterestIncomeOther	2422000
CY2018	us-gaap	Noninterest Income Other NoninterestIncomeOther	1476000
CY2019	us-gaap	Noninterest Income NoninterestIncome	5366000
CY2018	us-gaap	Noninterest Income NoninterestIncome	5610000
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	20352000
CY2018	us-gaap	Labor And Related Expense LaborAndRelatedExpense	18771000
CY2019	us-gaap	Occupancy Net OccupancyNet	4230000
CY2018	us-gaap	Occupancy Net OccupancyNet	3677000
CY2019	fusb	Computer Services Expense ComputerServicesExpense	1525000
CY2018	fusb	Computer Services Expense ComputerServicesExpense	1300000
CY2019	us-gaap	Professional Fees ProfessionalFees	1176000
CY2018	us-gaap	Professional Fees ProfessionalFees	1031000
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	6499000
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	5812000
CY2019	us-gaap	Net Income Loss NetIncomeLoss	4566000
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.71
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.67
CY2018	us-gaap	Other Noninterest Expense OtherNoninterestExpense	5965000
CY2018	us-gaap	Noninterest Expense NoninterestExpense	32385000
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3391000
CY2018	us-gaap	Net Income Loss NetIncomeLoss	2490000
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.08
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.40
CY2019	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	43588000
CY2018	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	37138000
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	89000
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-3000
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	398000
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	731000
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1509000
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	802000
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	0
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	243000
CY2018	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	84000
CY2018	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	633000
CY2018	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	118000
CY2018	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	981000
CY2018	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	1641000
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.09
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	76208000
CY2018	us-gaap	Profit Loss ProfitLoss	2490000
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	2299000
CY2019	us-gaap	Profit Loss ProfitLoss	4566000
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	2334000
CY2019	us-gaap	Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease After Adjustments Tax Noncontrolling Interest1 OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsTaxNoncontrollingInterest1	-3000
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	562000
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	360000
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1478000
CY2019	us-gaap	Noncontrolling Interest Decrease From Deconsolidation NoncontrollingInterestDecreaseFromDeconsolidation	94000
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	2403000
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-1087000
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	69000
CY2019	fusb	Depreciation And Amortization Of Property Plant And Equipment And Computer Programs DepreciationAndAmortizationOfPropertyPlantAndEquipmentAndComputerPrograms	1609000
CY2018	fusb	Depreciation And Amortization Of Property Plant And Equipment And Computer Programs DepreciationAndAmortizationOfPropertyPlantAndEquipmentAndComputerPrograms	1455000
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1134000
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1488000
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	360000
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	444000
CY2019	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	562000
CY2018	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	804000
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	487000
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	171000
CY2019	fusb	Gains Losses On Sales Of Premises Equipment And Other Real Estate Held For Sale GainsLossesOnSalesOfPremisesEquipmentAndOtherRealEstateHeldForSale	-485000
CY2018	fusb	Gains Losses On Sales Of Premises Equipment And Other Real Estate Held For Sale GainsLossesOnSalesOfPremisesEquipmentAndOtherRealEstateHeldForSale	-472000
CY2019	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-328000
CY2018	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	224000
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	3891000
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1653000
CY2019	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	113000
CY2018	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	43000
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	2940000
CY2018	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	70000
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	11315000
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	8064000
CY2019	us-gaap	Increase Decrease In Federal Funds Sold IncreaseDecreaseInFederalFundsSold	-1726000
CY2018	us-gaap	Increase Decrease In Federal Funds Sold IncreaseDecreaseInFederalFundsSold	6646000
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	9094000
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	19676000
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	14271000
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	4221000
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	36020000
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	40665000
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	7039000
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	4693000
CY2019	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	434000
CY2018	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	-1471000
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	19014000
CY2019	fusb	Proceeds From Sale Of Premises And Equipment And Other Real Estate ProceedsFromSaleOfPremisesAndEquipmentAndOtherRealEstate	1259000
CY2018	fusb	Proceeds From Sale Of Premises And Equipment And Other Real Estate ProceedsFromSaleOfPremisesAndEquipmentAndOtherRealEstate	3104000
CY2019	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	34430000
CY2018	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	17859000
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3184000
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1549000
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	9721000
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	2702000
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-21063000
CY2018	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	47271000
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	9498000
CY2018	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-25067000
CY2018	us-gaap	Payments For Federal Home Loan Bank Advances PaymentsForFederalHomeLoanBankAdvances	10000000
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1478000
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	562000
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	495000
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-13605000
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	11709000
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	7431000
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	22475000
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	49599000
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	27124000
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	57030000
CY2019	us-gaap	Nature Of Operations NatureOfOperations	<div align="left"> <table border="0" cellspacing="0" cellpadding="0" style="border-collapse:collapse; width:100%;"> <tr> <td valign="top" style="width:5%;white-space:nowrap"> <p style="margin-bottom:0pt;margin-top:10pt;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;"><font style="font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">1.</font></p></td> <td valign="top"> <p style="margin-bottom:0pt;margin-top:10pt;font-weight:bold;font-style:normal;text-transform:none;font-variant: normal;font-family:Times New Roman;font-size:12pt;"><font style="font-weight:normal;"></font><font style="font-size:10pt;">DESCRIPTION OF BUSINESS</font></p></td></tr></table></div> <p style="margin-bottom:0pt;margin-top:10pt;margin-left:5%;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">First US Bancshares, Inc. (“Bancshares”) and its wholly-owned subsidiary, First US Bank (the “Bank”), provide commercial banking services to customers through 20 banking offices located in Birmingham, Bucksville, Butler, Calera, Centreville, Columbiana, Gilbertown, Grove Hill, Harpersville, Jackson, Thomasville, Tuscaloosa and Woodstock, Alabama; Knoxville and Powell, Tennessee; and Rose Hill and Ewing, Virginia. In addition, the Bank operates loan production offices in Mobile, Alabama and the Chattanooga, Tennessee area. Both Bancshares and the Bank are headquartered in Birmingham, Alabama.</p> <p style="margin-bottom:0pt;margin-top:10pt;margin-left:5%;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The Bank owns all of the stock of Acceptance Loan Company, Inc., an Alabama corporation (“ALC”). ALC is a finance company headquartered in Mobile, Alabama that performs both indirect lending through third-party retailers and conventional consumer finance lending through a branch network. As of December 31, 2019, ALC conducted indirect lending in 11 states, including Alabama, Florida, Georgia, Kentucky, Mississippi, Missouri, North Carolina, South Carolina, Tennessee, Texas and Virginia, with loans underwritten centrally at ALC’s headquarters location. ALC’s branch network serves customers through 21 offices located in Alabama and southeast Mississippi.</p> <p style="margin-bottom:0pt;margin-top:10pt;margin-left:5%;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The Bank also owns all of the stock of FUSB Reinsurance, Inc. (“FUSB Reinsurance”), an Arizona corporation. FUSB Reinsurance is an insurance company that underwrites credit life and accidental death insurance related to consumer loans written by the Bank and ALC.</p>
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<p style="margin-bottom:0pt;margin-top:10pt;margin-left:5%;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Use of Estimates</p> <p style="margin-bottom:0pt;margin-top:10pt;margin-left:5%;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The accounting principles and reporting policies of the Company, and the methods of applying these principles, conform with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and with general practices within the financial services industry. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the consolidated balance sheets and revenues and expenses for the period included in the consolidated statements of operations and of cash flows. Actual results could differ from those estimates.</p> <p style="margin-bottom:0pt;margin-top:10pt;margin-left:5%;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Material estimates that are particularly susceptible to significant changes in the near term relate to the accounting for the allowance for loan and lease losses, the right-of-use asset and lease liability, the value of other real estate owned (“OREO”) and certain collateral-dependent loans, consideration related to goodwill impairment testing and deferred tax asset valuation. In connection with the determination of the allowance for loan losses and OREO, management generally obtains independent appraisals for significant properties, evaluates the overall portfolio characteristics and delinquencies and monitors economic conditions.</p> <p style="margin-bottom:0pt;margin-top:10pt;margin-left:5%;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">A substantial portion of the Company’s loans are secured by real estate in its primary market areas. Accordingly, the ultimate collectability of a substantial portion of the Company’s loan portfolio and the recovery of a portion of the carrying amount of foreclosed real estate are susceptible to changes in economic conditions in the Company’s primary market areas.</p>
CY2019	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<p style="margin-bottom:0pt;margin-top:10pt;margin-left:5%;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Reclassification and Restatement</p> <p style="margin-bottom:0pt;margin-top:10pt;margin-left:5%;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Certain amounts in the prior period consolidated financial statements have been reclassified to conform to the 2019 presentation. These reclassifications had no effect on the Company’s results of operations, financial position or net cash flow.</p>
CY2019	fusb	Maximum Maturity Period For Cash Equivalents MaximumMaturityPeriodForCashEquivalents	P90D
CY2019	us-gaap	Interest Paid Net InterestPaidNet	6533000
CY2018	us-gaap	Interest Paid Net InterestPaidNet	4307000
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	131000
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	134000
CY2019	us-gaap	Mortgage Loans On Real Estate Foreclosures MortgageLoansOnRealEstateForeclosures	1340000
CY2018	us-gaap	Mortgage Loans On Real Estate Foreclosures MortgageLoansOnRealEstateForeclosures	1068000
CY2019	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	42000
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	164690000
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	150812000
CY2019	fusb	Number Of Investment Portfolios NumberOfInvestmentPortfolios	3
CY2019	fusb	Number Of Securities Held As Trading Securities NumberOfSecuritiesHeldAsTradingSecurities	0
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6386946
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6276670
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	412800
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	377951
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6799746
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6654621
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	0
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0
CY2018Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Cash And Equivalents BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents	3085000
CY2018Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Marketable Securities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities	5977000
CY2018Q3	fusb	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Federal Home Loan Bank Stock BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalHomeLoanBankStock	565000
CY2018Q3	fusb	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Loans BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoans	154577000
CY2018Q3	fusb	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net Loans BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNetLoans	154577000
CY2018Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	1215000
CY2018Q3	fusb	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Real Estate Owned BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherRealEstateOwned	85000
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	610000
CY2018Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	20852000
CY2018Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Noncurrent Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets	223000
CY2018Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangibles BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles	2048000
CY2018Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Assets BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets	167775000
CY2018Q3	fusb	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deposits BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits	140375000
CY2018Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Long Term Debt BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt	10000000
CY2018Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Noncurrent Liabilities Other BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther	437000
CY2018Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities	150812000
CY2018Q3	fusb	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Liabilities And Shareholders Equity BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAndShareholdersEquity	150812000
CY2018Q3	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet	16963000
CY2018Q3	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	24398000
CY2018Q3	us-gaap	Goodwill Goodwill	7435000
CY2018Q3	us-gaap	Business Combination Acquired Receivables Fair Value BusinessCombinationAcquiredReceivablesFairValue	151746000
CY2018Q3	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Amount Net CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet	2831000
CY2018Q3	fusb	Business Combination Purchased Loans BusinessCombinationPurchasedLoans	154577000
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	94071000
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	540000
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	595000
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	22000
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	56000
CY2019Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	14306000
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	135656000
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	174000
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	3343000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	341000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	17882000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	44274000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	31574000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	344000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	17881000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	44342000
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	31449000
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	60000
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	767000
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	7064000
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	6449000
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	60000
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	779000
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	7035000
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	6432000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	21214000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	91000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	39848000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	504000
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	1531000
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	4000
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	9399000
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	52000
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	10836000
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	92000
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	107357000
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	3251000
CY2019Q4	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Carrying Amount Net CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesCarryingAmountNet	175000
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	770000
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	20082000
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	610000
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	69
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	153
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	35
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	21
CY2019	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings	0
CY2018	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings	0
CY2019Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	51700000
CY2018Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	46700000
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	556053000
CY2019Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	5048000
CY2018Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	525870000
CY2018Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	5948000
CY2019Q4	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	34600000
CY2018Q4	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	27000000
CY2019Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	900000
CY2018Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	800000
CY2019	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	100000
CY2018	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	500000
CY2019	us-gaap	Loans And Leases Receivable Related Parties Proceeds LoansAndLeasesReceivableRelatedPartiesProceeds	22000
CY2018	us-gaap	Loans And Leases Receivable Related Parties Proceeds LoansAndLeasesReceivableRelatedPartiesProceeds	200000
CY2018Q3	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Outstanding Balance CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesOutstandingBalance	2900000
CY2019Q4	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Outstanding Balance CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesOutstandingBalance	224000
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Outstanding Balance CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesOutstandingBalance	567000
CY2019Q4	fusb	Certain Loans Acquired In Transfer Accounted For As Debt Securities Fair Value Adjustment CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesFairValueAdjustment	-49000
CY2018Q4	fusb	Certain Loans Acquired In Transfer Accounted For As Debt Securities Fair Value Adjustment CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesFairValueAdjustment	-70000
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Carrying Amount Net CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesCarryingAmountNet	497000
CY2019Q4	us-gaap	Certain Loans Acquired In Transfer Accretable Yield CertainLoansAcquiredInTransferAccretableYield	0
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Accretable Yield CertainLoansAcquiredInTransferAccretableYield	0
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	3723000
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	2759000
CY2019Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	100000
CY2018Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	200000
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	2861000
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	2861000
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	256000
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	256000
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	227000
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	3117000
CY2019Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	3117000
CY2018Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	708000
CY2018Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	708000
CY2018Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	831000
CY2018Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	831000
CY2018Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	166000
CY2018Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	1539000
CY2018Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	1539000
CY2019	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	2876000
CY2019	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	86000
CY2019	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	86000
CY2018	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	1460000
CY2018	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	65000
CY2018	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	67000
CY2019Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	3700000
CY2018Q4	us-gaap	Loans And Leases Receivable Impaired Nonperforming Nonaccrual Of Interest LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest	2800000
CY2019	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	41000
CY2018	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	44000
CY2018	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	2656000
CY2018	fusb	Other Real Estate Gross Gains OtherRealEstateGrossGains	282000
CY2018	fusb	Other Real Estate Gross Losses OtherRealEstateGrossLosses	127000
CY2018	fusb	Other Real Estate Net Income Loss OtherRealEstateNetIncomeLoss	155000
CY2018	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	242000
CY2019Q4	fusb	Foreclosed Real Estate Owned Fair Value Less Disposal Costs ForeclosedRealEstateOwnedFairValueLessDisposalCosts	100000
CY2018Q4	fusb	Foreclosed Real Estate Owned Fair Value Less Disposal Costs ForeclosedRealEstateOwnedFairValueLessDisposalCosts	200000
CY2019Q4	fusb	Interest Income Recorded InterestIncomeRecorded	147000
CY2018Q4	fusb	Interest Income Recorded InterestIncomeRecorded	27000
CY2019Q4	fusb	Financing Receivable Restructuring Recorded Investment With Nonaccrual Status FinancingReceivableRestructuringRecordedInvestmentWithNonaccrualStatus	16000
CY2018Q4	fusb	Financing Receivable Restructuring Recorded Investment With Nonaccrual Status FinancingReceivableRestructuringRecordedInvestmentWithNonaccrualStatus	65000
CY2019Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period Cash Flows Expected To Be Collected At Acquisition CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsExpectedToBeCollectedAtAcquisition	0
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period Cash Flows Expected To Be Collected At Acquisition CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsExpectedToBeCollectedAtAcquisition	0
CY2019	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0
CY2018	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	0
CY2019	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	5
CY2019	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	282000
CY2019	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	136000
CY2018	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	7
CY2018	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	594000
CY2018	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	297000
CY2019	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	313000
CY2019	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	664000
CY2019	fusb	Other Real Estate Gross Gains OtherRealEstateGrossGains	39000
CY2019	fusb	Other Real Estate Gross Losses OtherRealEstateGrossLosses	77000
CY2019	fusb	Other Real Estate Net Income Loss OtherRealEstateNetIncomeLoss	-38000
CY2019	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	38000
CY2017Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	3792000
CY2018	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	456000
CY2019Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	700000
CY2018Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	0
CY2019Q4	us-gaap	Foreclosed Assets ForeclosedAssets	300000
CY2018Q4	us-gaap	Foreclosed Assets ForeclosedAssets	200000
CY2019Q4	us-gaap	Goodwill Goodwill	7435000
CY2018Q4	us-gaap	Goodwill Goodwill	7400000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	2048000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	658000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1390000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	415000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	341000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	268000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	195000
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	122000
CY2019Q4	fusb	Finite Lived Intangible Assets Amortization Expense Year Six FiniteLivedIntangibleAssetsAmortizationExpenseYearSix	49000
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	51736000
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	48305000
CY2019Q4	fusb	Property Plant And Equipment Excluding Construction In Progress Net PropertyPlantAndEquipmentExcludingConstructionInProgressNet	29166000
CY2018Q4	fusb	Property Plant And Equipment Excluding Construction In Progress Net PropertyPlantAndEquipmentExcludingConstructionInProgressNet	26868000
CY2019Q4	fusb	Construction In Progress Net ConstructionInProgressNet	50000
CY2018Q4	fusb	Construction In Progress Net ConstructionInProgressNet	775000
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1609000
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1455000
CY2019Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	178801000
CY2019Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	39118000
CY2019Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	14226000
CY2019Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	8054000
CY2019Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	5880000
CY2019Q4	us-gaap	Time Deposits TimeDeposits	246079000
CY2019Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	211500000
CY2018Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	282200000
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-54000
CY2019Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	48200000
CY2018Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	70700000
CY2019Q4	fusb	Brokered Certificates Of Deposit BrokeredCertificatesOfDeposit	7400000
CY2018Q4	fusb	Brokered Certificates Of Deposit BrokeredCertificatesOfDeposit	33300000
CY2019Q4	us-gaap	Related Party Deposit Liabilities RelatedPartyDepositLiabilities	5200000
CY2018Q4	us-gaap	Related Party Deposit Liabilities RelatedPartyDepositLiabilities	4900000
CY2019Q4	us-gaap	Federal Funds Purchased FederalFundsPurchased	0
CY2018Q4	us-gaap	Federal Funds Purchased FederalFundsPurchased	0
CY2019Q4	fusb	Available Fund Lines From Correspondent Banks AvailableFundLinesFromCorrespondentBanks	61700000
CY2018Q4	fusb	Available Fund Lines From Correspondent Banks AvailableFundLinesFromCorrespondentBanks	72200000
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	25000000
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	500000
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	10000000
CY2018Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	0
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	0
CY2018Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	0
CY2019	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Balance Of Agreements Outstanding FederalHomeLoanBankAdvancesActivityForYearAverageBalanceOfAgreementsOutstanding
CY2018	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Balance Of Agreements Outstanding FederalHomeLoanBankAdvancesActivityForYearAverageBalanceOfAgreementsOutstanding	5288000
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Activity For Year Maximum Outstanding At Any Month End FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd
CY2018Q4	us-gaap	Federal Home Loan Bank Advances Activity For Year Maximum Outstanding At Any Month End FederalHomeLoanBankAdvancesActivityForYearMaximumOutstandingAtAnyMonthEnd	10000000
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate At Period End FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateAtPeriodEnd
CY2018Q4	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate At Period End FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateAtPeriodEnd	0.0190
CY2019Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	34600000
CY2018Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	27000000
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-157000
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1100000
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	859000
CY2019	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	1046000
CY2018	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	702000
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	166000
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	59000
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	34000
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	140000
CY2019	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	200000
CY2018	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	199000
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1220000
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	712000
CY2019	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	95000
CY2018	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	119000
CY2019	fusb	Income Tax Reconciliation Deductions Life Insurance Amount IncomeTaxReconciliationDeductionsLifeInsuranceAmount	65000
CY2018	fusb	Income Tax Reconciliation Deductions Life Insurance Amount IncomeTaxReconciliationDeductionsLifeInsuranceAmount	66000
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	229000
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	137000
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-43000
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	237000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	1354000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	1228000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	1040000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	1064000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense DeferredTaxAssetsTaxDeferredExpense	337000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense DeferredTaxAssetsTaxDeferredExpense	308000
CY2018	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	427000
CY2018	fusb	Auto Club Revenue AutoClubRevenue	244000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	52000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	99000
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	655000
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	1549000
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	270000
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	280000
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	107000
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	167000
CY2019Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	71000
CY2018Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	797000
CY2019Q4	fusb	Deferred Tax Assets Unrealized Losses On Derivatives Designated As Cash Flow Hedges DeferredTaxAssetsUnrealizedLossesOnDerivativesDesignatedAsCashFlowHedges	1000
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	630000
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	621000
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	4517000
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	6113000
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	1205000
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	888000
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	347000
CY2018Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	463000
CY2019Q4	fusb	Deferred Tax Liabilities Partnerships DeferredTaxLiabilitiesPartnerships	135000
CY2018Q4	fusb	Deferred Tax Liabilities Partnerships DeferredTaxLiabilitiesPartnerships	122000
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	79000
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	31000
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1766000
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1504000
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	2751000
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	4609000
CY2019	us-gaap	Open Tax Year OpenTaxYear	2014 2015 2016 2017 2018 2019
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0
CY2019	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	0
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	0
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued	0
CY2019	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	1.00
CY2019	fusb	Defined Contribution Plan Discretionary Contribution Percent DefinedContributionPlanDiscretionaryContributionPercent	0.02
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	500000
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	500000
CY2019	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	0.20
CY2019Q4	us-gaap	Defined Benefit Plan Number Of Shares Of Equity Securities Issued By Employer And Related Parties Included In Plan Assets DefinedBenefitPlanNumberOfSharesOfEquitySecuritiesIssuedByEmployerAndRelatedPartiesIncludedInPlanAssets	221357
CY2018Q4	us-gaap	Defined Benefit Plan Number Of Shares Of Equity Securities Issued By Employer And Related Parties Included In Plan Assets DefinedBenefitPlanNumberOfSharesOfEquitySecuritiesIssuedByEmployerAndRelatedPartiesIncludedInPlanAssets	240402
CY2019Q4	us-gaap	Deferred Compensation Arrangement With Individual Common Stock Reserved For Future Issuance DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance	124392
CY2018Q4	us-gaap	Deferred Compensation Arrangement With Individual Common Stock Reserved For Future Issuance DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance	116766
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0259
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0277
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y6M
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y6M
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.309
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.283
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0125
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0150
CY2019	fusb	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Fair Value Of Stock Option SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsFairValueOfStockOption	3.30
CY2018	fusb	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Fair Value Of Stock Option SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsFairValueOfStockOption	3.51
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	377950
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	318000
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	68150
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	62150
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	7000
CY2019Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.10500
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	500
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	26300
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	1700
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	412800
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	298467
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	249467
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.80
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.43
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	9.99
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	11.71
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	8.30
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	8.12
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	11.96
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	11.15
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.72
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	9.16
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	8.72
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	900000
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0
CY2019	fusb	Capital Conservation Buffer Rate CapitalConservationBufferRate	0.0250
CY2018	fusb	Capital Conservation Buffer Rate CapitalConservationBufferRate	0.01875
CY2019Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	74375000
CY2019Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	74375000
CY2019Q4	us-gaap	Capital Capital	80137000
CY2019Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	74375000
CY2019Q4	us-gaap	Common Equity Tier One Capital Ratio CommonEquityTierOneCapitalRatio	0.1278
CY2019Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1278
CY2019Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1377
CY2019Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0961
CY2019Q4	fusb	Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.07000
CY2019Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.08500
CY2019Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2019Q4	fusb	Common Equity Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Asset CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAsset	0.0650
CY2019Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0800
CY2019Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.1000
CY2019Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.0500
CY2018Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	70177000
CY2018Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	70177000
CY2018Q4	us-gaap	Capital Capital	75232000
CY2018Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	70177000
CY2018Q4	us-gaap	Common Equity Tier One Capital Ratio CommonEquityTierOneCapitalRatio	0.1262
CY2018Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1262
CY2018Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1353
CY2018Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0896
CY2018Q4	fusb	Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.06375
CY2018Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.07875
CY2018Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.09875
CY2018Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2018Q4	fusb	Common Equity Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Asset CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAsset	0.0650
CY2018Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0800
CY2018Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.1000
CY2018Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.0500
CY2019	us-gaap	Dividend Payment Restrictions Schedule Description DividendPaymentRestrictionsScheduleDescription	Under Alabama law, a state-chartered bank must annually transfer to surplus at least 10% of its “net earnings” (defined as the remainder of all earnings from current operations plus actual recoveries on loans and investments and other assets, less all current operating expenses, actual losses, accrued dividends on preferred stock and all federal, state and local taxes) until the bank’s surplus is at least 20% of its capital. Until the bank’s surplus reaches this level, a bank may not declare a dividend in excess of 90% of its net earnings. Once a bank’s surplus equals or exceeds 20% of its capital, if the total of all dividends declared by the bank in a calendar year will exceed the sum of its net earnings for that year and its retained net earnings for the preceding two years (less any required transfers to surplus), then the bank must obtain prior written approval from the Superintendent of the Alabama State Banking Department. The bank may not pay any dividends or make any withdrawals or transfers from surplus without the prior written approval of the Superintendent. The FDIC prohibits the payment of cash dividends if (1) as a result of such payment, the bank would be undercapitalized or (2) the bank is in default with respect to any assessment due to the FDIC, including a deposit insurance assessment. These restrictions could materially influence the Bank’s, and therefore Bancshares’, ability to pay dividends.
CY2019Q4	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P5Y
CY2019	fusb	Lessee Operating Lease Period Of Option To Terminate LesseeOperatingLeasePeriodOfOptionToTerminate	P1Y
CY2019	us-gaap	Lease Cost LeaseCost	839000
CY2018	us-gaap	Lease Cost LeaseCost	670000
CY2019	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	845000
CY2018	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	124000
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	3543000
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	3573000
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y9M3D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0316
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	764000
CY2018	us-gaap	Operating Lease Payments OperatingLeasePayments	558000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	711000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	609000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	539000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	453000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	438000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	1276000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	4026000
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	453000
CY2018Q4	us-gaap	Derivative Number Of Instruments Held DerivativeNumberOfInstrumentsHeld	0
CY2018	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	700000
CY2019Q4	us-gaap	Assets Under Management Carrying Amount AssetsUnderManagementCarryingAmount	62117000
CY2019Q4	us-gaap	Hedged Asset Fair Value Hedge Cumulative Increase Decrease HedgedAssetFairValueHedgeCumulativeIncreaseDecrease	-307000
CY2019Q4	fusb	Amortized Cost Basis Of Closed Portfolios Used In Hedging Relationships AmortizedCostBasisOfClosedPortfoliosUsedInHedgingRelationships	62400000
CY2019Q4	fusb	Cumulative Basis Adjustments Associated With Hedging Relationships CumulativeBasisAdjustmentsAssociatedWithHedgingRelationships	300000
CY2019Q4	us-gaap	Derivative Amount Of Hedged Item DerivativeAmountOfHedgedItem	20000000
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2019	fusb	Provision Reduction In Reserve For Loan Losses ProvisionReductionInReserveForLoanLosses	2714000
CY2019Q4	us-gaap	Marketable Securities MarketableSecurities	108356000
CY2019	fusb	Interest Income From External Customers InterestIncomeFromExternalCustomers	43588000
CY2018	fusb	Provision Reduction In Reserve For Loan Losses ProvisionReductionInReserveForLoanLosses	2622000
CY2018Q4	us-gaap	Marketable Securities MarketableSecurities	153949000
CY2018Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	5000
CY2018	fusb	Interest Income From External Customers InterestIncomeFromExternalCustomers	37138000
CY2019	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	431000
CY2019	fusb	Auto Club Revenue AutoClubRevenue	220000
CY2019	fusb	Other Income Atm Fees OtherIncomeATMFees	442000
CY2018	fusb	Other Income Atm Fees OtherIncomeATMFees	388000
CY2019	fusb	Wire Transfer Fees WireTransferFees	50000
CY2018	fusb	Wire Transfer Fees WireTransferFees	38000
CY2019	us-gaap	Other Income OtherIncome	434000
CY2018	us-gaap	Other Income OtherIncome	255000
CY2019	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	873000
CY2018	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	829000
CY2019	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	867000
CY2019Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	883000
CY2019Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	715000
CY2018	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	811000
CY2019	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	196000
CY2018	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	188000
CY2019	fusb	Business Development And Travel BusinessDevelopmentAndTravel	404000
CY2018	fusb	Business Development And Travel BusinessDevelopmentAndTravel	327000
CY2019	fusb	Collection And Recoveries CollectionAndRecoveries	125000
CY2018	fusb	Collection And Recoveries CollectionAndRecoveries	176000
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	310000
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	492000
CY2019	us-gaap	General Insurance Expense GeneralInsuranceExpense	586000
CY2018	us-gaap	General Insurance Expense GeneralInsuranceExpense	559000
CY2019	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	204000
CY2018	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	331000
CY2019	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	-408000
CY2018	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	-391000
CY2019	fusb	Foreclosed Real Estate Write Downs Net Of Gain Or Loss On Sale ForeclosedRealEstateWriteDownsNetOfGainOrLossOnSale	76000
CY2018	fusb	Foreclosed Real Estate Write Downs Net Of Gain Or Loss On Sale ForeclosedRealEstateWriteDownsNetOfGainOrLossOnSale	87000
CY2019	fusb	Foreclosed Real Estate Carrying Cost Expense ForeclosedRealEstateCarryingCostExpense	109000
CY2018	fusb	Foreclosed Real Estate Carrying Cost Expense ForeclosedRealEstateCarryingCostExpense	135000
CY2019	fusb	Foreclosed Real Estate Other Expense Net Of Gain Or Loss On Sale ForeclosedRealEstateOtherExpenseNetOfGainOrLossOnSale	185000
CY2018	fusb	Foreclosed Real Estate Other Expense Net Of Gain Or Loss On Sale ForeclosedRealEstateOtherExpenseNetOfGainOrLossOnSale	222000
CY2019	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1853000
CY2018	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1468000
CY2019	us-gaap	Operating Expenses OperatingExpenses	6499000
CY2018	us-gaap	Operating Expenses OperatingExpenses	5965000
CY2019	fusb	Credit Losses Associated With Derivative Contracts CreditLossesAssociatedWithDerivativeContracts	0
CY2018	fusb	Credit Losses Associated With Derivative Contracts CreditLossesAssociatedWithDerivativeContracts	0
CY2019Q4	fusb	Securities Committed To Sell Amount SecuritiesCommittedToSellAmount	0
CY2018Q4	fusb	Securities Committed To Sell Amount SecuritiesCommittedToSellAmount	0
CY2019Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	200000
CY2018Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	100000
CY2019Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	10825000
CY2019Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	11027000
CY2019Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	10923000
CY2019Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	10813000
CY2018Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	11177000
CY2018Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	9452000
CY2018Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	8390000
CY2018Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	8119000
CY2019Q4	us-gaap	Interest Expense InterestExpense	1636000
CY2019Q3	us-gaap	Interest Expense InterestExpense	1680000
CY2019Q2	us-gaap	Interest Expense InterestExpense	1690000
CY2019Q1	us-gaap	Interest Expense InterestExpense	1640000
CY2018Q4	us-gaap	Interest Expense InterestExpense	1533000
CY2018Q3	us-gaap	Interest Expense InterestExpense	1124000
CY2018Q2	us-gaap	Interest Expense InterestExpense	888000
CY2018Q1	us-gaap	Interest Expense InterestExpense	805000
CY2019Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9189000
CY2019Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9347000
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9233000
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9173000
CY2018Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9644000
CY2018Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	8328000
CY2018Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	7502000
CY2018Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	7314000
CY2019Q4	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	716000
CY2019Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	400000
CY2018Q4	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	473000
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	509000
CY2018Q1	us-gaap	Noninterest Expense NoninterestExpense	7301000
CY2019Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1590000
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1332000
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1305000
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1585000
CY2018Q4	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1947000
CY2018Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	789000
CY2018Q2	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	702000
CY2018Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	658000
CY2019Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	8473000
CY2019Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	8464000
CY2019Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	8518000
CY2019Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	8773000
CY2018Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	9171000
CY2018Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	7539000
CY2018Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	6800000
CY2018Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	6656000
CY2019Q4	us-gaap	Noninterest Income NoninterestIncome	1396000
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	1414000
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	1291000
CY2019Q1	us-gaap	Noninterest Income NoninterestIncome	1265000
CY2018Q4	us-gaap	Noninterest Income NoninterestIncome	1226000
CY2018Q3	us-gaap	Noninterest Income NoninterestIncome	2112000
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	1132000
CY2018Q1	us-gaap	Noninterest Income NoninterestIncome	1140000
CY2019Q4	us-gaap	Noninterest Expense NoninterestExpense	8279000
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	8546000
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	8504000
CY2019Q1	us-gaap	Noninterest Expense NoninterestExpense	8453000
CY2018Q4	us-gaap	Noninterest Expense NoninterestExpense	8450000
CY2018Q3	us-gaap	Noninterest Expense NoninterestExpense	9142000
CY2018Q2	us-gaap	Noninterest Expense NoninterestExpense	7492000
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	440000
CY2018Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	495000
CY2019Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	381000
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	214000
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	300000
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	351000
CY2018Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	470000
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	269000
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	81000
CY2018Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	81000
CY2019Q4	us-gaap	Profit Loss ProfitLoss	1209000
CY2019Q3	us-gaap	Profit Loss ProfitLoss	1118000
CY2019Q2	us-gaap	Profit Loss ProfitLoss	1005000
CY2019Q1	us-gaap	Profit Loss ProfitLoss	1234000
CY2018Q4	us-gaap	Profit Loss ProfitLoss	1477000
CY2018Q3	us-gaap	Profit Loss ProfitLoss	240000
CY2018Q2	us-gaap	Profit Loss ProfitLoss	359000
CY2018Q1	us-gaap	Profit Loss ProfitLoss	414000
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.19
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.16
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.19
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.23
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.04
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.06
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.07
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.18
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.16
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.15
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.18
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.03
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.06
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.06

Files In Submission

Name	View Source	Status
0001564590-20-011613-index-headers.html	Edgar Link	pending
0001564590-20-011613-index.html	Edgar Link	pending
0001564590-20-011613.txt	Edgar Link	pending
0001564590-20-011613-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
fusb-10k_20191231.htm	Edgar Link	pending
fusb-20191231.xml	Edgar Link	completed
fusb-20191231.xsd	Edgar Link	pending
fusb-20191231_cal.xml	Edgar Link	unprocessable
fusb-20191231_def.xml	Edgar Link	unprocessable
fusb-20191231_lab.xml	Edgar Link	unprocessable
fusb-20191231_pre.xml	Edgar Link	unprocessable
fusb-ex1012_174.htm	Edgar Link	pending
fusb-ex1013_172.htm	Edgar Link	pending
fusb-ex1014_173.htm	Edgar Link	pending
fusb-ex106_175.htm	Edgar Link	pending
fusb-ex21_10.htm	Edgar Link	pending
fusb-ex23_9.htm	Edgar Link	pending
fusb-ex311_8.htm	Edgar Link	pending
fusb-ex312_7.htm	Edgar Link	pending
fusb-ex32_6.htm	Edgar Link	pending
fusb-ex41_176.htm	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R100.htm	Edgar Link	pending
R101.htm	Edgar Link	pending
R102.htm	Edgar Link	pending
R103.htm	Edgar Link	pending
R104.htm	Edgar Link	pending
R105.htm	Edgar Link	pending
R106.htm	Edgar Link	pending
R107.htm	Edgar Link	pending
R108.htm	Edgar Link	pending
R109.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R110.htm	Edgar Link	pending
R111.htm	Edgar Link	pending
R112.htm	Edgar Link	pending
R113.htm	Edgar Link	pending
R114.htm	Edgar Link	pending
R115.htm	Edgar Link	pending
R116.htm	Edgar Link	pending
R117.htm	Edgar Link	pending
R118.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
R99.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$FUSB
FIRST US BANCSHARES, INC. Stock $fusb

2019 Q4 Form 10-K Financial Statement

#000156459020011613 Filed on March 18, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FUSB FIRST US BANCSHARES, INC. Stock $fusb

2019 Q4 Form 10-K Financial Statement

#000156459020011613 Filed on March 18, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FUSB
FIRST US BANCSHARES, INC. Stock $fusb