$FUSB
FIRST US BANCSHARES, INC. Stock $fusb

$fusb Overview Financials Valuation SEC Filings Company Website

2023 Q2 Form 10-Q Financial Statement

#000095017023022100 Filed on May 15, 2023

Income Statement

Concept	2023 Q2	2023 Q1	2022 Q1
Revenue	$282.0K	$285.0K	$9.381M
YoY Change	-97.04%	-96.96%	-4.71%
Cost Of Revenue			$51.00K
YoY Change			-20.31%
Gross Profit			$9.330M
YoY Change			-4.61%
Gross Profit Margin			99.46%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development	$182.0K	$169.0K	$171.0K
YoY Change	-3.19%	-1.17%	-26.29%
% of Gross Profit			1.83%
Depreciation & Amortization	$447.0K	$467.0K	$460.0K
YoY Change	-3.87%	1.52%	-14.81%
% of Gross Profit			4.93%
Operating Expenses	$1.295M	$1.220M	$1.315M
YoY Change	1.57%	-7.22%	-18.88%
Operating Profit			$8.015M
YoY Change			-1.78%
Interest Expense	$3.676M	$2.526M	$672.0K
YoY Change	425.89%	275.89%	-13.96%
% of Operating Profit			8.38%
Other Income/Expense, Net
YoY Change
Pretax Income	$2.671M	$2.724M	$1.761M
YoY Change	39.92%	54.68%	44.58%
Income Tax	$648.0K	$652.0K	$400.0K
% Of Pretax Income	24.26%	23.94%	22.71%
Net Earnings	$2.023M	$2.072M	$1.361M
YoY Change	42.97%	52.24%	43.26%
Net Earnings / Revenue	717.38%	727.02%	14.51%
Basic Earnings Per Share	$0.34	$0.35	$0.22
Diluted Earnings Per Share	$0.31	$0.33	$0.20
COMMON SHARES
Basic Shares Outstanding	5.865M	5.869M	6.276M
Diluted Shares Outstanding	6.402M	6.374M	6.696M

Balance Sheet

Concept	2023 Q2	2023 Q1	2022 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$199.1M	$197.1M	$235.6M
YoY Change	6.86%	-16.33%	16.82%
Cash & Equivalents	$74.67M	$68.43M	$97.84M
Short-Term Investments	$124.4M	$128.7M	$137.7M
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$24.05M	$24.29M	$27.04M
YoY Change	-2.97%	-10.15%	-12.51%
Goodwill	$7.435M	$7.435M	$7.435M
YoY Change	0.0%	0.0%	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	$1.068B	$1.026B	$968.6M
YoY Change	11.8%	5.93%	4.54%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.563M	$841.0K	$305.0K
YoY Change	217.68%	175.74%	52.5%
Accrued Expenses	$1.778M	$1.870M	$2.228M
YoY Change	-16.92%	-16.07%	-25.73%
Deferred Revenue
YoY Change
Short-Term Debt	$30.00M	$25.00M
YoY Change	197.38%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$3.341M	$25.84M	$2.533M
YoY Change	26.94%	920.17%	-20.84%
LONG-TERM LIABILITIES
Long-Term Debt	$10.76M	$10.74M	$10.67M
YoY Change	0.68%	0.68%
Other Long-Term Liabilities	$5.669M	$7.431M	$4.456M
YoY Change	11.09%	66.76%	-38.96%
Total Long-Term Liabilities	$16.43M	$18.18M	$15.13M
YoY Change	4.05%	20.15%	107.22%
TOTAL LIABILITIES
Total Short-Term Liabilities	$3.341M	$25.84M	$2.533M
Total Long-Term Liabilities	$16.43M	$18.18M	$15.13M
Total Liabilities	$982.4M	$941.9M	$880.8M
YoY Change	12.56%	6.93%	5.04%
SHAREHOLDERS EQUITY
Retained Earnings	$106.2M	$104.4M	$99.60M
YoY Change	5.27%	4.84%
Common Stock	$14.75M	$14.74M	$14.35M
YoY Change	2.87%	2.68%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$26.56M	$26.69M	$23.28M
YoY Change	2.09%	14.65%
Treasury Stock Shares		$1.871M	$1.550M
Shareholders Equity	$85.73M	$84.15M	$87.81M
YoY Change
Total Liabilities & Shareholders Equity	$1.068B	$1.026B	$968.6M
YoY Change	11.8%	5.93%	4.55%

Cashflow Statement

Concept	2023 Q2	2023 Q1	2022 Q1
OPERATING ACTIVITIES
Net Income	$2.023M	$2.072M	$1.361M
YoY Change	42.97%	52.24%	43.26%
Depreciation, Depletion And Amortization	$447.0K	$467.0K	$460.0K
YoY Change	-3.87%	1.52%	-14.81%
Cash From Operating Activities	$3.422M	$3.585M	$846.0K
YoY Change	-20.99%	323.76%	-55.17%
INVESTING ACTIVITIES
Capital Expenditures	$49.00K	$139.0K	$118.0K
YoY Change	-78.03%	17.8%	-3.28%
Acquisitions
YoY Change
Other Investing Activities	-$36.53M	$2.326M	$21.99M
YoY Change	-35.19%	-89.42%	-469.5%
Cash From Investing Activities	-$36.63M	$2.187M	$21.87M
YoY Change	-35.26%	-90.0%	-460.07%
FINANCING ACTIVITIES
Cash Dividend Paid		$294.0K	$185.0K
YoY Change		58.92%	-0.54%
Common Stock Issuance & Retirement, Net			$958.0K
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	39.45M	32.50M	13.88M
YoY Change	-433.56%	134.14%	-61.05%
NET CHANGE
Cash From Operating Activities	3.422M	3.585M	846.0K
Cash From Investing Activities	-36.63M	2.187M	21.87M
Cash From Financing Activities	39.45M	32.50M	13.88M
Net Change In Cash	6.241M	38.28M	36.60M
YoY Change	-109.74%	4.59%	16.35%
FREE CASH FLOW
Cash From Operating Activities	$3.422M	$3.585M	$846.0K
Capital Expenditures	$49.00K	$139.0K	$118.0K
Free Cash Flow	$3.373M	$3.446M	$728.0K
YoY Change	-17.89%	373.35%	-58.75%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2023Q1	dei	Entity Registrant Name EntityRegistrantName	FIRST US BANCSHARES INC
CY2023Q1	us-gaap	Type Of Revenue Extensible List TypeOfRevenueExtensibleList	http://fasb.org/us-gaap/2022#ServiceMember
CY2023Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023Q1	dei	Amendment Flag AmendmentFlag	false
CY2022Q1	us-gaap	Type Of Revenue Extensible List TypeOfRevenueExtensibleList	http://fasb.org/us-gaap/2022#ServiceMember
CY2023Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2023Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000717806
CY2023Q1	dei	Document Type DocumentType	10-Q
CY2023Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2023Q1	dei	Document Period End Date DocumentPeriodEndDate	2023-03-31
CY2023Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2023Q1	dei	Entity File Number EntityFileNumber	0-14549
CY2023Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2023Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	63-0843362
CY2023Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	3291 U.S. Highway 280
CY2023Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	Birmingham
CY2023Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	AL
CY2023Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	35243
CY2023Q1	dei	City Area Code CityAreaCode	205
CY2023Q1	dei	Local Phone Number LocalPhoneNumber	582-1200
CY2023Q1	dei	Security12b Title Security12bTitle	Common Stock, $0.01 par value
CY2023Q1	dei	Trading Symbol TradingSymbol	FUSB
CY2023Q1	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2023Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023Q1	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023Q1	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2023Q1	dei	Entity Small Business EntitySmallBusiness	true
CY2023Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023Q1	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	5865399
CY2023Q1	us-gaap	Cash And Due From Banks CashAndDueFromBanks	11970000
CY2022Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	11844000
CY2023Q1	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	56457000
CY2022Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	18308000
CY2023Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	68427000
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	30152000
CY2023Q1	us-gaap	Federal Funds Sold FederalFundsSold	263000
CY2022Q4	us-gaap	Federal Funds Sold FederalFundsSold	1768000
CY2023Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	127007000
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	130795000
CY2023Q1	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1682000
CY2022Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1862000
CY2023Q1	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	1590000
CY2022Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	1359000
CY2023Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	775889000
CY2022Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	773873000
CY2023Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	11599000
CY2022Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	9422000
CY2023Q1	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	764290000
CY2022Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	764451000
CY2023Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	24290000
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	24439000
CY2023Q1	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	16472000
CY2022Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	16399000
CY2023Q1	us-gaap	Interest Receivable InterestReceivable	2898000
CY2022Q4	us-gaap	Interest Receivable InterestReceivable	3011000
CY2023Q1	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	7746000
CY2022Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	7801000
CY2023Q1	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	617000
CY2022Q1	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	8847000
CY2023Q1	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	978000
CY2022Q1	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	534000
CY2023Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	11960000
CY2022Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	9381000
CY2023Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	2137000
CY2022Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	686000
CY2023Q1	us-gaap	Other Assets OtherAssets	11376000
CY2022Q4	us-gaap	Other Assets OtherAssets	11944000
CY2023Q1	us-gaap	Assets Assets	1026658000
CY2022Q4	us-gaap	Assets Assets	994667000
CY2023Q1	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	154661000
CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	169822000
CY2023Q1	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	743224000
CY2022Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	700203000
CY2023Q1	us-gaap	Deposits Deposits	897885000
CY2022Q4	us-gaap	Deposits Deposits	870025000
CY2023Q1	us-gaap	Deposit Liabilities Accrued Interest DepositLiabilitiesAccruedInterest	841000
CY2022Q4	us-gaap	Deposit Liabilities Accrued Interest DepositLiabilitiesAccruedInterest	607000
CY2023Q1	us-gaap	Other Liabilities OtherLiabilities	7431000
CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	8136000
CY2023Q1	us-gaap	Short Term Borrowings ShortTermBorrowings	25000000
CY2022Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	20038000
CY2023Q1	us-gaap	Long Term Debt LongTermDebt	10744000
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	10726000
CY2023Q1	us-gaap	Liabilities Liabilities	941901000
CY2022Q4	us-gaap	Liabilities Liabilities	909532000
CY2023Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	10000000
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	10000000
CY2023Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	7738156
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	7680856
CY2023Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	5866866
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	5812258
CY2023Q1	us-gaap	Common Stock Value CommonStockValue	75000
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	75000
CY2023Q1	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	14663000
CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	14510000
CY2023Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7714000
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-7241000
CY2023Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	104427000
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	104460000
CY2023Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	1871290
CY2022Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1868598
CY2023Q1	us-gaap	Treasury Stock Value TreasuryStockValue	26694000
CY2022Q4	us-gaap	Treasury Stock Value TreasuryStockValue	26669000
CY2023Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	84757000
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	85135000
CY2023Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1026658000
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	994667000
CY2023Q1	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	10982000
CY2022Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	516000
CY2023Q1	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	389000
CY2022Q1	us-gaap	Interest Expense Short Term Borrowings InterestExpenseShortTermBorrowings	156000
CY2023Q1	us-gaap	Interest Expense InterestExpense	2526000
CY2022Q1	us-gaap	Interest Expense InterestExpense	672000
CY2023Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9434000
CY2022Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	8709000
CY2023Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	269000
CY2022Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	721000
CY2023Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	9165000
CY2022Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	7988000
CY2023Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	285000
CY2022Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	299000
CY2023Q1	us-gaap	Lease Income LeaseIncome	231000
CY2022Q1	us-gaap	Lease Income LeaseIncome	214000
CY2023Q1	us-gaap	Noninterest Income Other NoninterestIncomeOther	313000
CY2022Q1	us-gaap	Noninterest Income Other NoninterestIncomeOther	316000
CY2023Q1	us-gaap	Noninterest Income NoninterestIncome	829000
CY2022Q1	us-gaap	Noninterest Income NoninterestIncome	829000
CY2023Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4222000
CY2022Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4330000
CY2023Q1	us-gaap	Occupancy Net OccupancyNet	835000
CY2022Q1	us-gaap	Occupancy Net OccupancyNet	766000
CY2023Q1	fusb	Computer Services Expense ComputerServicesExpense	421000
CY2022Q1	fusb	Computer Services Expense ComputerServicesExpense	377000
CY2023Q1	us-gaap	General Insurance Expense GeneralInsuranceExpense	327000
CY2022Q1	us-gaap	General Insurance Expense GeneralInsuranceExpense	367000
CY2023Q1	us-gaap	Professional Fees ProfessionalFees	245000
CY2022Q1	us-gaap	Professional Fees ProfessionalFees	268000
CY2023Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1220000
CY2022Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	948000
CY2023Q1	us-gaap	Noninterest Expense NoninterestExpense	7270000
CY2022Q1	us-gaap	Noninterest Expense NoninterestExpense	7056000
CY2023Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2724000
CY2022Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1761000
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	652000
CY2022Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	400000
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	2072000
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	1361000
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.35
CY2022Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2022Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.20
CY2023Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.05
CY2022Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.03
CY2023Q1	us-gaap	Profit Loss ProfitLoss	2072000
CY2022Q1	us-gaap	Profit Loss ProfitLoss	1361000
CY2022Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	73000
CY2023Q1	fusb	Gains Losses On Sales Of Premises Equipment And Other Real Estate Held For Sale GainsLossesOnSalesOfPremisesEquipmentAndOtherRealEstateHeldForSale	-249000
CY2023Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-105000
CY2022Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-1176000
CY2023Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-313000
CY2022Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-3527000
CY2023Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-18000
CY2022Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	312000
CY2023Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-50000
CY2022Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	937000
CY2023Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	-37000
CY2022Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTax	0
CY2023Q1	fusb	Other Comprehensive Income Loss Reclassification Adjustment Net Gains On Cash Flow Hedge Derivatives Realized In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentNetGainsOnCashFlowHedgeDerivativesRealizedInNetIncomeNetOfTax	-110000
CY2023Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-473000
CY2022Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2590000
CY2023Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1599000
CY2022Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-1229000
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	90064000
CY2022Q1	us-gaap	Profit Loss ProfitLoss	1361000
CY2022Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-3527000
CY2022Q1	us-gaap	Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease After Adjustments Tax Noncontrolling Interest1 OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsTaxNoncontrollingInterest1	937000
CY2022Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.03
CY2022Q1	us-gaap	Dividends Common Stock DividendsCommonStock	185000
CY2022Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	115000
CY2022Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	958000
CY2022Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	87807000
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	85135000
CY2023Q1	us-gaap	Profit Loss ProfitLoss	2072000
CY2023Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-313000
CY2023Q1	us-gaap	Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease After Adjustments Tax Noncontrolling Interest1 OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsTaxNoncontrollingInterest1	-160000
CY2023Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.05
CY2023Q1	us-gaap	Dividends Common Stock DividendsCommonStock	294000
CY2023Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	128000
CY2023Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	84757000
CY2023Q1	us-gaap	Profit Loss ProfitLoss	2072000
CY2022Q1	us-gaap	Profit Loss ProfitLoss	1361000
CY2023Q1	fusb	Depreciation And Amortization Of Property Plant And Equipment And Computer Programs DepreciationAndAmortizationOfPropertyPlantAndEquipmentAndComputerPrograms	412000
CY2022Q1	fusb	Depreciation And Amortization Of Property Plant And Equipment And Computer Programs DepreciationAndAmortizationOfPropertyPlantAndEquipmentAndComputerPrograms	387000
CY2023Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	269000
CY2022Q1	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	721000
CY2023Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-427000
CY2022Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	269000
CY2023Q1	fusb	Proceeds From Settlement Of Derivative Contracts ProceedsFromSettlementOfDerivativeContracts	2166000
CY2023Q1	fusb	Reclassification Of Unrealized Gains On Terminated Derivative Contracts ReclassificationOfUnrealizedGainsOnTerminatedDerivativeContracts	227000
CY2023Q1	us-gaap	Share Based Compensation ShareBasedCompensation	153000
CY2022Q1	us-gaap	Share Based Compensation ShareBasedCompensation	115000
CY2023Q1	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	16000
CY2022Q1	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	88000
CY2023Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	55000
CY2023Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1020000
CY2022Q1	fusb	Gains Losses On Sales Of Premises Equipment And Other Real Estate Held For Sale GainsLossesOnSalesOfPremisesEquipmentAndOtherRealEstateHeldForSale	131000
CY2023Q1	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-113000
CY2022Q1	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-106000
CY2023Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	521000
CY2022Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	494000
CY2023Q1	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	234000
CY2022Q1	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	81000
CY2023Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-979000
CY2022Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-1730000
CY2023Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	3585000
CY2022Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	846000
CY2023Q1	us-gaap	Increase Decrease In Federal Funds Sold IncreaseDecreaseInFederalFundsSold	1505000
CY2022Q1	us-gaap	Increase Decrease In Federal Funds Sold IncreaseDecreaseInFederalFundsSold	1000
CY2022Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	14291000
CY2023Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	3355000
CY2022Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	5369000
CY2023Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	179000
CY2022Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	714000
CY2023Q1	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	231000
CY2022Q1	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	64000
CY2023Q1	fusb	Proceeds From Sale Of Premises And Equipment And Other Real Estate ProceedsFromSaleOfPremisesAndEquipmentAndOtherRealEstate	128000
CY2022Q1	fusb	Proceeds From Sale Of Premises And Equipment And Other Real Estate ProceedsFromSaleOfPremisesAndEquipmentAndOtherRealEstate	1550000
CY2023Q1	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	2610000
CY2022Q1	us-gaap	Payments For Proceeds From Loans Receivable PaymentsForProceedsFromLoansReceivable	-28706000
CY2023Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	139000
CY2022Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	118000
CY2023Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	2187000
CY2022Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	21867000
CY2023Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	27860000
CY2022Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	14991000
CY2023Q1	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	4962000
CY2022Q1	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	34000
CY2023Q1	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	25000
CY2022Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	958000
CY2023Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	294000
CY2022Q1	us-gaap	Payments Of Dividends PaymentsOfDividends	185000
CY2023Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	32503000
CY2022Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	13882000
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	38275000
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	36595000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	30152000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	61244000
CY2023Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	68427000
CY2022Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	97839000
CY2023Q1	us-gaap	Interest Paid Net InterestPaidNet	2292000
CY2022Q1	us-gaap	Interest Paid Net InterestPaidNet	591000
CY2023Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	138513000
CY2023Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	7000
CY2023Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	11513000
CY2023Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	127007000
CY2023Q1	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1682000
CY2023Q1	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	83000
CY2023Q1	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	1599000
CY2022Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1071000
CY2023Q1	fusb	Foreclosed Assets Acquired In Settlement Of Loans ForeclosedAssetsAcquiredInSettlementOfLoans	490000
CY2022Q1	fusb	Foreclosed Assets Acquired In Settlement Of Loans ForeclosedAssetsAcquiredInSettlementOfLoans	51000
CY2023Q1	us-gaap	Nature Of Operations NatureOfOperations	<div style="text-indent:0.0%;display:flex;margin-top:12.0pt;justify-content:flex-start;align-items:baseline;margin-bottom:0.0pt;min-width:4.537%;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;text-indent:0;display:inline-flex;font-size:10.0pt;font-family:Times New Roman;justify-content:flex-start;min-width:4.537%;">1.</span><div style="display:inline;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">GENERAL</span></div></div><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">The accompanying unaudited interim condensed consolidated financial statements include the accounts of First US Bancshares, Inc. (“Bancshares”) and its subsidiaries (collectively, the “Company”). Bancshares is the parent holding company of First US Bank (the “Bank”). The Company and the Bank are both headquartered in Birmingham, Alabama. The Bank operates a finance company subsidiary, Acceptance Loan Company, Inc. (“ALC”). Management has determined that the Bank and ALC comprise Bancshares’ </span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">two</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> reportable operating segments. All significant intercompany transactions and accounts have been eliminated. During the third quarter of 2021, ALC ceased new business development and permanently closed its </span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">20</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> branch lending locations in Alabama and Mississippi to the public. ALC continues to service its remaining portfolio of loans from its headquarters in Mobile, Alabama.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">The unaudited interim condensed consolidated financial statements, in the opinion of management, reflect all adjustments necessary for a fair presentation of the Company’s consolidated financial position, results of operations and cash flows for the periods presented. Such adjustments are of a normal, recurring nature, except for the adoption of Accounting Standards Codification (“ASC”) 326, </span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;font-style:italic;min-width:fit-content;">Measurement of Credit Losses on Financial Instruments</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">, as discussed below. The results of operations for any interim period are not necessarily indicative of results expected for the fiscal year ending December 31, 2023. While certain information and disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”), management believes that the disclosures herein are adequate to make the information presented not misleading. These unaudited interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K as of and for the year ended December 31, 2022</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">.</span></p>
CY2023Q1	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2023Q1	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<p style="text-indent:0.0%;font-size:10.0pt;margin-top:10.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Reclassification</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:10.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Certain amounts in the prior period consolidated financial statements and the notes to the prior period consolidated financial statements have been reclassified to conform to the 2023 presentation. These reclassifications had no effect on the Company’s results of operations, financial position or net cash flow.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:10.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Summary of Significant Accounting Policies</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:10.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Certain significant accounting policies followed by the Company are set forth in Note 2, “Summary of Significant Accounting Policies,” of the Notes to Consolidated Financial Statements in the Company’s Annual Report on Form 10-K as of and for the year ended December 31, 2022.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:10.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:bold;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Adoption of ASC 326</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:10.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">On January 1, 2023, the Company adopted Accounting Standards Update ("ASU") 2016-13, </span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;font-style:italic;min-width:fit-content;">Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">, as subsequently updated for certain clarifications, targeted relief and codification improvements. ASC 326 replaces the previous "incurred loss" model for measuring credit losses, which required allowances for current known and inherent losses within the portfolio, with an "expected loss" model, which requires allowances for losses expected to be incurred over the life of the portfolio. The new current expected credit loss ("CECL") model requires the measurement of all expected credit losses for financial assets measured at amortized cost and certain off-balance-sheet credit exposures based on historical experience, current conditions, and reasonable and supportable forecasts. ASC 326 also requires enhanced disclosures related to the significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization's portfolio. In addition, ASC 326 includes certain changes to the accounting for available-for-sale securities including the requirement to present credit losses as an allowance rather than as a direct write-down.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">The Company adopted ASC 326 using the modified retrospective method for financial assets measured at amortized cost and off-balance-sheet credit exposures. Upon adoption, the Company recognized an increase in the allowance for credit losses (including both loans and unfunded lending commitments) of $</span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">2.4</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> million, which included an after-tax cumulative effect decrease to retained earnings totaling $</span><span style="font-size:10.0pt;font-family:"Times New Roman", serif;background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">1.8</span><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> million. Operating results for periods after January 1, 2023 are presented in accordance with ASC 326 while prior period amounts continue to be reported in accordance with previously applicable standards and the accounting policies described in Note 2 of the Company's 2022 Form 10-K. In connection with the adoption of ASC 326, the Company revised certain accounting policies and implemented certain accounting policy elections. The revised accounting policies are described below.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:justify;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;font-style:italic;min-width:fit-content;">Loans and Leases Held for Investment</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;font-style:italic;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Loans and leases held for investment (“loans”) represent financial instruments that management has the intent and the ability to hold for the foreseeable future or until maturity or payoff. Loans are reported at amortized cost, net of the allowance for credit losses. Amortized cost is the principal balance outstanding, net of purchase premiums and discounts, fair value hedge accounting adjustments, as well as deferred loan fees and costs. Accrued interest receivable on loans and leases is reported separately on the Company’s consolidated balance sheets and is excluded from the estimate of credit losses. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized in interest income using the level-yield method without anticipating prepayments.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">At the time a loan is 90 days delinquent, it is placed on nonaccrual status unless it is well-secured and in process of collection. Interest income is discontinued on all loans on nonaccrual status. Past-due status is based on the contractual terms of the loan. In all cases, loans are moved to nonaccrual status, or charged off at an earlier date, if collection of principal and interest is considered doubtful.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">All interest accrued but not received on loans on nonaccrual status is reversed against interest income. Interest received on such loans is accounted for on the cash-basis or cost-recovery methods, until qualifying for return to accrual. Under the cash-basis method, interest income is recorded when the payment is received in cash. Under the cost-recovery method, interest income is not recognized until the loan balance is reduced to zero. Loans are returned to accrual status when all of the principal and interest amounts contractually due are brought current and future payments are reasonably assured.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;font-style:italic;min-width:fit-content;">Allowance for Credit Losses – Loans and Leases</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">The allowance for credit losses is a contra-asset valuation account that is deducted from the amortized cost basis of the loans to present the net amount expected to be collected on the loans. Loans are charged off against the allowance when management believes the uncollectibility of a loan balance is confirmed. Expected recoveries do not exceed the aggregate of amounts previously charged off and expected to be charged off. The allowance for credit losses on loans and leases is adjusted through the provision for (recovery of) credit losses.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Management estimates the allowance balance by using relevant available information from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Historical credit loss experience provides the basis for estimation of expected credit losses. Adjustments to historical loss information are made for differences in loan-specific risk characteristics such as changes in economic and business conditions, underwriting standards, portfolio mix, and delinquency level. Considerations related to environmental conditions include reasonable and supportable current and forecasted data related to economic factors such as inflation and unemployment levels, as well as interest rates.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">The allowance for credit losses is measured on a collective (pool) basis when similar risk characteristics exist. Loans that do not share risk characteristics are evaluated on an individual basis. Loans evaluated individually are not included in the collective evaluation. When management determines that foreclosure is probable or when the borrower is experiencing financial difficulty as of the reporting date and repayment is expected to be provided substantially through the operation or sale of the collateral, expected credit losses are based on the fair value of the collateral at the reporting date, adjusted for estimated selling costs as appropriate.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Expected credit losses are estimated over the contractual term of the loans, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals, and modifications unless renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancellable by the Company, or management has a reasonable expectation at the reporting date that a loan modification will be made to a borrower experiencing financial difficulty.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Additional information related to the factors considered in evaluating credit losses on loans and leases is included in Note 4.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;font-style:italic;min-width:fit-content;">Allowance for Credit Losses on Off-Balance Sheet Credit Exposures</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;font-style:italic;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">The Company estimates expected credit losses over the contractual period in which the Company is exposed to credit risk via a contractual obligation to extend credit, unless that obligation is unconditionally cancellable by the Company. The following categories of off-balance sheet credit exposures have been identified: unfunded loan commitments, standby letters of credit, and financial guarantees (collectively, “unfunded lending commitments”). The allowance for credit losses on unfunded lending commitments is adjusted through the provision for (recovery of) credit losses. The estimate may include consideration of the likelihood that funding will occur and an estimate of expected credit losses on commitments expected to be funded, as well as reasonable practical expedients or industry practices to assist in the evaluation of estimated funding amounts.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Additional information related to the factors considered in evaluating credit losses on loans and leases is included in Note 4.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;font-style:italic;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;font-style:italic;min-width:fit-content;">Allowance for Credit Losses – Investment Securities Held-to-Maturity</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Expected credit losses on held-to-maturity debt securities are measured on a collective basis by major security type. Accrued interest receivable on held-to-maturity securities is excluded from the estimate of credit losses. The estimate of expected credit losses considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. The allowance for credit losses on investment securities held-to-maturity is adjusted through the provision for (recovery of) credit losses.</span><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Additional information related to the factors considered in evaluating credit losses in the held-to-maturity investment portfolio is included in Note 3.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;font-style:italic;min-width:fit-content;">Allowance for Credit Losses – Investment Securities Available-for-Sale</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">For available-for-sale debt securities in an unrealized loss position, the Company first assesses whether it intends to sell, or it is more likely than not that it will be required to sell, the security before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the security’s amortized cost basis is written down to fair value through income. For debt securities available-for-sale that do not meet the aforementioned criteria, the Company evaluates whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes in the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. Changes in the allowance for credit losses are recorded in the provision for (recovery of) credit losses. Losses are charged against the allowance when management believes the uncollectibility of an available-for-sale security is confirmed or when either of the criteria regarding intent or requirement to sell is met. Accrued interest receivable on available-for-sale debt securities is excluded from the estimate of credit losses.</span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="white-space:pre-wrap;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;"> </span></p><p style="text-indent:0.0%;font-size:10.0pt;margin-top:0.0pt;font-family:Times New Roman;margin-bottom:0.0pt;text-align:left;"><span style="background-color:rgba(0,0,0,0);color:rgba(0,0,0,1);white-space:pre-wrap;font-weight:normal;font-size:10.0pt;font-family:"Times New Roman", serif;min-width:fit-content;">Additional information related to the factors considered in evaluating credit losses in the available-for-sale investment portfolio is included in Note 3.</span></p>
CY2023Q1	fusb	Weighted Average Number Of Shares Outstanding WeightedAverageNumberOfSharesOutstanding	5839562
CY2022Q1	fusb	Weighted Average Number Of Shares Outstanding WeightedAverageNumberOfSharesOutstanding	6157598
CY2023Q1	fusb	Weighted Average Director Deferred Shares WeightedAverageDirectorDeferredShares	114783
CY2022Q1	fusb	Weighted Average Director Deferred Shares WeightedAverageDirectorDeferredShares	118186
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	5954345
CY2022Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6275784
CY2023Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	419650
CY2022Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	420250
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6373995
CY2022Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6696034
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	2072000
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	1361000
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.35
CY2022Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2022Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.20
CY2023Q1	fusb	Transition Adjustment Increase In Loan Loss Reserves TransitionAdjustmentIncreaseInLoanLossReserves	2100000
CY2022Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	141883000
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	8000
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	11096000
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	130795000
CY2022Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1862000
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	93000
CY2022Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	1769000
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	12979000
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	12696000
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	49855000
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	46675000
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	65318000
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	58009000
CY2023Q1	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	1443000
CY2023Q1	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	1380000
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	10361000
CY2023Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	9627000
CY2023Q1	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	239000
CY2023Q1	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	219000
CY2023Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	138513000
CY2023Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	127007000
CY2023Q1	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	1682000
CY2023Q1	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	1599000
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	16145000
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	977000
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	109996000
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	10536000
CY2023Q1	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	1599000
CY2023Q1	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	83000
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	59240000
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	2946000
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	69650000
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	8150000
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	1413000
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	60000
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	356000
CY2022Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	33000
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	91
CY2023Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	21
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	37
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	75
CY2023Q1	fusb	Loans And Leases Receivable Allowance Held To Maturity LoansAndLeasesReceivableAllowanceHeldToMaturity	0
CY2023Q1	fusb	Loans And Leases Receivable Allowance Held To Maturity LoansAndLeasesReceivableAllowanceHeldToMaturity	0
CY2023Q1	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	51900000
CY2022Q4	us-gaap	Debt Securities Available For Sale Restricted DebtSecuritiesAvailableForSaleRestricted	54700000
CY2023Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	775889000
CY2023Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	11599000
CY2023Q1	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	764290000
CY2022Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	773873000
CY2022Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	9422000
CY2022Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	764451000
CY2023Q1	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	100000
CY2022Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	200000
CY2023Q1	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	0
CY2023Q1	us-gaap	Loans And Leases Receivable Related Parties Proceeds LoansAndLeasesReceivableRelatedPartiesProceeds	0
CY2022	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	0
CY2022	us-gaap	Loans And Leases Receivable Related Parties Proceeds LoansAndLeasesReceivableRelatedPartiesProceeds	100000
CY2023Q1	fusb	Minimum Commitment Required For Evaluating Idividually MinimumCommitmentRequiredForEvaluatingIdividually	500000
CY2023Q1	fusb	Commitment Required For Evaluating Individually At Management Discretion CommitmentRequiredForEvaluatingIndividuallyAtManagementDiscretion	500000
CY2022Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	9422000
CY2023Q1	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	534000
CY2023Q1	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	319000
CY2023Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	269000
CY2023Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	11599000
CY2021Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	8320000
CY2022Q1	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	729000
CY2022Q1	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	172000
CY2022Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	721000
CY2022Q1	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	8484000
CY2023Q1	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	775889000
CY2023Q1	fusb	Percentage Of Loans And Leases Past Due PercentageOfLoansAndLeasesPastDue	0.0013
CY2023Q1	fusb	Percentage Of Loans And Leases Current PercentageOfLoansAndLeasesCurrent	0.9987
CY2023Q1	fusb	Percentage Of Loans And Leases PercentageOfLoansAndLeases	1.0000
CY2022Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	773873000
CY2022Q4	fusb	Percentage Of Loans And Leases Past Due PercentageOfLoansAndLeasesPastDue	0.0032
CY2022Q4	fusb	Percentage Of Loans And Leases Current PercentageOfLoansAndLeasesCurrent	0.9968
CY2022Q4	fusb	Percentage Of Loans And Leases PercentageOfLoansAndLeases	1.0000
CY2023Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	1214000
CY2023Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	613000
CY2022Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	1651000
CY2023Q1	fusb	Collateral Loans Individually Evaluated Amortized Cost Basis CollateralLoansIndividuallyEvaluatedAmortizedCostBasis	3676000
CY2022Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	5154000
CY2022Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	5154000
CY2022Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	367000
CY2022Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	367000
CY2022Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	259000
CY2022Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	5521000
CY2022Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	5521000
CY2022Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	259000
CY2022	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	2444000
CY2022	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	20000
CY2022	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	22000
CY2022Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	686000
CY2021Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	2149000
CY2022Q1	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	1431000
CY2022Q1	fusb	Other Real Estate Gross Gains OtherRealEstateGrossGains	183000
CY2022Q1	fusb	Other Real Estate Gross Losses OtherRealEstateGrossLosses	27000
CY2022Q1	fusb	Other Real Estate Net Income Loss OtherRealEstateNetIncomeLoss	156000
CY2023Q1	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	69000
CY2023Q1	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	617000
CY2022Q1	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	874000
CY2023Q1	fusb	Foreclosed Real Estate Owned Fair Value Less Disposal Costs ForeclosedRealEstateOwnedFairValueLessDisposalCosts	20000
CY2022Q1	fusb	Foreclosed Real Estate Owned Fair Value Less Disposal Costs ForeclosedRealEstateOwnedFairValueLessDisposalCosts	0
CY2023Q1	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	0
CY2022Q1	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	18000
CY2023Q1	us-gaap	Goodwill Goodwill	7435000
CY2022Q4	us-gaap	Goodwill Goodwill	7435000
CY2023Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	2048000
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	2048000
CY2023Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1737000
CY2022Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1682000
CY2023Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	311000
CY2022Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	366000
CY2023Q1	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	7746000
CY2022Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	7801000
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	140000
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	122000
CY2023Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	49000
CY2023Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	311000
CY2023Q1	us-gaap	Federal Funds Purchased FederalFundsPurchased	0
CY2022Q4	us-gaap	Federal Funds Purchased FederalFundsPurchased	0
CY2023Q1	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	0
CY2022Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	38000
CY2023Q1	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	25000000.0
CY2022Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	20000000.0
CY2023Q1	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	0
CY2022Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	0
CY2023Q1	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	74200000
CY2022Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	68200000
CY2023Q1	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	55000000.0
CY2022Q4	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	50000000.0
CY2023Q1	fusb	Federal Home Loan Bank Advances General Debt Obligations Disclosures Excess Of Collateral Available To Utilize Additional Credit FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresExcessOfCollateralAvailableToUtilizeAdditionalCredit	19200000
CY2022Q4	fusb	Federal Home Loan Bank Advances General Debt Obligations Disclosures Excess Of Collateral Available To Utilize Additional Credit FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresExcessOfCollateralAvailableToUtilizeAdditionalCredit	18200000
CY2023Q1	fusb	Percentage Par Value Allowed As Collateral PercentageParValueAllowedAsCollateral	1
CY2023Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	600
CY2022Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	10.86
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	419650
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.79
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	419650
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.79
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	419650
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	9.79
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	700000
CY2022Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	400000
CY2023Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.239
CY2022Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.227
CY2023Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	6000000.0
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	5200000
CY2023Q1	us-gaap	Deferred Compensation Arrangement With Individual Common Stock Reserved For Future Issuance DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance	116561
CY2022Q4	us-gaap	Deferred Compensation Arrangement With Individual Common Stock Reserved For Future Issuance DeferredCompensationArrangementWithIndividualCommonStockReservedForFutureIssuance	114190
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	419650
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.79
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	420250
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.79
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
CY2023Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
CY2022Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2023Q1	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0
CY2023Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0
CY2022Q1	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0
CY2022Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0
CY2023Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	0
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0
CY2022Q1	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	0
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0
CY2022Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	387000
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	415916
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	9.77
CY2023Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0
CY2022Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	900000
CY2023Q1	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P5Y
CY2023Q1	fusb	Lessee Operating Lease Period Of Option To Terminate LesseeOperatingLeasePeriodOfOptionToTerminate	P1Y
CY2023Q1	us-gaap	Lease Cost LeaseCost	108000
CY2022Q1	us-gaap	Lease Cost LeaseCost	108000
CY2023Q1	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	234000
CY2022Q1	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	214000
CY2023Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1791000
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1883000
CY2023Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	1870000
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	1961000
CY2023Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y9M10D
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y10D
CY2023Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0330
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0330
CY2023Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	107000
CY2022Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	108000
CY2023Q1	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	324000
CY2023Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	438000
CY2023Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	339000
CY2023Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	346000
CY2023Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	353000
CY2023Q1	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	238000
CY2023Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	2038000
CY2023Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	168000
CY2023Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	1870000
CY2023Q1	us-gaap	Derivative Assets DerivativeAssets	0
CY2023Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	0
CY2022Q1	fusb	Interest Income From External Customers InterestIncomeFromExternalCustomers	9381000
CY2023Q1	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2023Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	11960000
CY2023Q1	us-gaap	Interest Expense InterestExpense	2526000
CY2023Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	9434000
CY2023Q1	fusb	Provision Reduction In Reserve For Loan Losses ProvisionReductionInReserveForLoanLosses	269000
CY2023Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	9165000
CY2023Q1	us-gaap	Noninterest Income NoninterestIncome	829000
CY2023Q1	us-gaap	Noninterest Expense NoninterestExpense	7270000
CY2023Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2724000
CY2023Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	652000
CY2023Q1	us-gaap	Profit Loss ProfitLoss	2072000
CY2023Q1	us-gaap	Assets Assets	1026658000
CY2023Q1	us-gaap	Marketable Securities MarketableSecurities	128689000
CY2023Q1	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	764290000
CY2023Q1	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	7746000
CY2023Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	139000
CY2023Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	412000
CY2023Q1	fusb	Interest Income From External Customers InterestIncomeFromExternalCustomers	11960000
CY2022Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	9381000
CY2022Q1	us-gaap	Interest Expense InterestExpense	672000
CY2022Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	8709000
CY2022Q1	fusb	Provision Reduction In Reserve For Loan Losses ProvisionReductionInReserveForLoanLosses	721000
CY2022Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	7988000
CY2022Q1	us-gaap	Noninterest Income NoninterestIncome	829000
CY2022Q1	us-gaap	Noninterest Expense NoninterestExpense	7056000
CY2022Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1761000
CY2022Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	400000
CY2022Q1	us-gaap	Profit Loss ProfitLoss	1361000
CY2022Q1	us-gaap	Assets Assets	968646000
CY2022Q1	us-gaap	Marketable Securities MarketableSecurities	137736000
CY2022Q1	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	669846000
CY2022Q1	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	7996000
CY2022Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	118000
CY2023Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	114000
CY2022Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	110000
CY2023Q1	fusb	Other Income Atm Fees OtherIncomeATMFees	112000
CY2022Q1	fusb	Other Income Atm Fees OtherIncomeATMFees	134000
CY2022Q1	fusb	Gain On Sales Of Premises And Equipment And Other Assets GainOnSalesOfPremisesAndEquipmentAndOtherAssets	19000
CY2023Q1	us-gaap	Other Income OtherIncome	87000
CY2022Q1	us-gaap	Other Income OtherIncome	53000
CY2023Q1	us-gaap	Noninterest Income Other NoninterestIncomeOther	313000
CY2022Q1	us-gaap	Noninterest Income Other NoninterestIncomeOther	316000
CY2023Q1	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	161000
CY2022Q1	us-gaap	Supplies And Postage Expense SuppliesAndPostageExpense	164000
CY2023Q1	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	169000
CY2022Q1	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	171000
CY2023Q1	fusb	Collection And Recoveries CollectionAndRecoveries	91000
CY2022Q1	fusb	Collection And Recoveries CollectionAndRecoveries	47000
CY2023Q1	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	95000
CY2022Q1	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	103000
CY2023Q1	fusb	Foreclosed Real Estate Other Expense Net Of Gain Or Loss On Sale ForeclosedRealEstateOtherExpenseNetOfGainOrLossOnSale	6000
CY2022Q1	fusb	Foreclosed Real Estate Other Expense Net Of Gain Or Loss On Sale ForeclosedRealEstateOtherExpenseNetOfGainOrLossOnSale	-145000
CY2023Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	574000
CY2022Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	509000
CY2023Q1	us-gaap	Operating Expenses OperatingExpenses	1220000
CY2022Q1	us-gaap	Operating Expenses OperatingExpenses	948000
CY2023Q1	us-gaap	Self Insurance Reserve SelfInsuranceReserve	200000
CY2022Q4	us-gaap	Self Insurance Reserve SelfInsuranceReserve	200000

Files In Submission

Name	View Source	Status
0000950170-23-022100-index-headers.html	Edgar Link	pending
0000950170-23-022100-index.html	Edgar Link	pending
0000950170-23-022100.txt	Edgar Link	pending
0000950170-23-022100-xbrl.zip	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
fusb-20230331.htm	Edgar Link	pending
fusb-20230331.xsd	Edgar Link	pending
fusb-ex31_1.htm	Edgar Link	pending
fusb-ex31_2.htm	Edgar Link	pending
fusb-ex32.htm	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
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R26.htm	Edgar Link	pending
fusb-20230331_cal.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
fusb-20230331_def.xml	Edgar Link	unprocessable
fusb-20230331_lab.xml	Edgar Link	unprocessable
fusb-20230331_pre.xml	Edgar Link	unprocessable
fusb-20230331_htm.xml	Edgar Link	completed
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
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R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$FUSB
FIRST US BANCSHARES, INC. Stock $fusb

2023 Q2 Form 10-Q Financial Statement

#000095017023022100 Filed on May 15, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FUSB FIRST US BANCSHARES, INC. Stock $fusb

2023 Q2 Form 10-Q Financial Statement

#000095017023022100 Filed on May 15, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FUSB
FIRST US BANCSHARES, INC. Stock $fusb