$CLST
Catalyst Bancorp, Inc. Stock $clst

$clst Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000155837024004220 Filed on March 28, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$3.155M		$9.661M
YoY Change	39.17%		20.55%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development	$794.0K		$911.0K
YoY Change	249.78%		8.32%
% of Gross Profit
Depreciation & Amortization	$101.0K	$103.0K	$403.0K
YoY Change	0.0%	-1.9%	-10.04%
% of Gross Profit
Operating Expenses	$794.0K		$911.0K
YoY Change	249.78%		8.32%
Operating Profit
YoY Change
Interest Expense	$1.047M		$1.860M
YoY Change	247.84%		172.33%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	-$5.941M	$382.0K	$683.0K
YoY Change	-8021.33%	114.61%	329.56%
Income Tax	-$1.264M	$62.00K	$81.00K
% Of Pretax Income		16.23%	11.86%
Net Earnings	-$4.677M	$320.0K	$602.0K
YoY Change	-6506.85%	107.79%	234.44%
Net Earnings / Revenue	-148.24%		6.23%
Basic Earnings Per Share	-$1.14		$0.14
Diluted Earnings Per Share	-$1.14	$0.08	$0.14
COMMON SHARES
Basic Shares Outstanding	4.560M	4.769M	4.383M
Diluted Shares Outstanding	4.089M		4.387M

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$76.01M	$19.01M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$5.995M	$6.072M	$6.072M
YoY Change	-3.34%	-3.66%	-3.66%
Goodwill
YoY Change
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	$282.0M	$270.9M	$270.9M
YoY Change	2.26%	2.87%	2.87%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$10.00M	$10.00M	$10.00M
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$10.00M	$10.00M	$10.00M
YoY Change
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$1.628M	$1.274M	$1.274M
YoY Change	117.94%	128.32%	128.32%
Total Long-Term Liabilities	$1.628M	$1.274M	$1.274M
YoY Change	117.94%	128.32%	128.32%
TOTAL LIABILITIES
Total Short-Term Liabilities	$10.00M	$10.00M	$10.00M
Total Long-Term Liabilities	$1.628M	$1.274M	$1.274M
Total Liabilities	$200.7M	$186.3M	$186.3M
YoY Change	5.79%	6.53%	6.53%
SHAREHOLDERS EQUITY
Retained Earnings	$48.37M	$53.05M
YoY Change	-7.83%	0.58%
Common Stock	$46.00K	$48.00K
YoY Change	-9.8%	-9.43%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$81.36M	$84.62M	$84.62M
YoY Change
Total Liabilities & Shareholders Equity	$282.0M	$270.9M	$270.9M
YoY Change	2.26%	2.87%	2.87%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	-$4.677M	$320.0K	$602.0K
YoY Change	-6506.85%	107.79%	234.44%
Depreciation, Depletion And Amortization	$101.0K	$103.0K	$403.0K
YoY Change	0.0%	-1.9%	-10.04%
Cash From Operating Activities	$247.0K	$928.0K	$2.008M
YoY Change	-312.93%	134.34%	160.1%
INVESTING ACTIVITIES
Capital Expenditures	$24.00K	$12.00K	$172.0K
YoY Change		-29.41%	-31.75%
Acquisitions
YoY Change
Other Investing Activities	$45.22M	-$4.595M	-$95.00K
YoY Change	1447.11%	181.73%	-99.32%
Cash From Investing Activities	$45.20M	-$4.607M	-$267.0K
YoY Change	1446.29%	179.55%	-98.11%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	11.56M	9.428M	3.798M
YoY Change	2.73%	-143.91%	-127.05%
NET CHANGE
Cash From Operating Activities	247.0K	928.0K	2.008M
Cash From Investing Activities	45.20M	-4.607M	-267.0K
Cash From Financing Activities	11.56M	9.428M	3.798M
Net Change In Cash	57.00M	5.749M	5.539M
YoY Change	305.55%	-125.3%	-120.21%
FREE CASH FLOW
Cash From Operating Activities	$247.0K	$928.0K	$2.008M
Capital Expenditures	$24.00K	$12.00K	$172.0K
Free Cash Flow	$223.0K	$916.0K	$1.836M
YoY Change	-292.24%	141.69%	253.08%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0001849867
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
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CY2023Q4	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
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CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue
CY2022Q4	us-gaap	Preferred Stock Value PreferredStockValue
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CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y6M
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y6M
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023	dei	Document Type DocumentType	10-K
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-12-31
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	001-40893
CY2023	dei	Entity Registrant Name EntityRegistrantName	CATALYST BANCORP, INC.
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	LA
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	86-2411762
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	235 N. Court Street
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	Opelousas
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	LA
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	70570
CY2023	dei	City Area Code CityAreaCode	337
CY2023	dei	Local Phone Number LocalPhoneNumber	948-3033
CY2023	dei	Security12b Title Security12bTitle	Common Stock (par value $.01 per share)
CY2023	dei	Trading Symbol TradingSymbol	CLST
CY2023	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	true
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	true
CY2023	dei	Entity Ex Transition Period EntityExTransitionPeriod	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	false
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CY2023	dei	Entity Shell Company EntityShellCompany	false
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CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	4560287
CY2023	dei	Auditor Name AuditorName	Castaing, Hussey & Lolan, LLC
CY2023	dei	Auditor Location AuditorLocation	New Iberia, LA
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CY2022Q4	clst	Foreclosed Real Estate Fair Value Disclosure ForeclosedRealEstateFairValueDisclosure	320000
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CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6303000
CY2023Q4	clst	Stock In Correspondent Banks StockInCorrespondentBanks	1878000
CY2022Q4	clst	Stock In Correspondent Banks StockInCorrespondentBanks	1808000
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CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8391000
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2439000
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-8211000
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	98591000
CY2022	us-gaap	Net Income Loss NetIncomeLoss	180000
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8391000
CY2022	clst	Stock Repurchased During Period2022 Recognition And Retention Plan Value StockRepurchasedDuringPeriod2022RecognitionAndRetentionPlanValue	2340000
CY2022	clst	Employee Stock Ownership Plan Shares Released For Allocation EmployeeStockOwnershipPlanSharesReleasedForAllocation	281000
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	191000
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	88512000
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	88512000
CY2023	us-gaap	Net Income Loss NetIncomeLoss	602000
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1837000
CY2023	clst	Stock Repurchased During Period2022 Recognition And Retention Plan Value StockRepurchasedDuringPeriod2022RecognitionAndRetentionPlanValue	415000
CY2023	clst	Employee Stock Ownership Plan Shares Released For Allocation EmployeeStockOwnershipPlanSharesReleasedForAllocation	246000
CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	523000
CY2023	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	6315000
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	84655000
CY2023	us-gaap	Profit Loss ProfitLoss	602000
CY2022	clst	Stock Dividend On Federal Home Loan Bank Stock StockDividendOnFederalHomeLoanBankStock	15000
CY2023	clst	Amortization Of Prepayment Penalties On Debt Restructuring AmortizationOfPrepaymentPenaltiesOnDebtRestructuring	180000
CY2022	clst	Amortization Of Prepayment Penalties On Debt Restructuring AmortizationOfPrepaymentPenaltiesOnDebtRestructuring	180000
CY2023	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	128000
CY2022	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-375000
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	243000
CY2023	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	409000
CY2022	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	314000
CY2023	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-92000
CY2022	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-77000
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	769000
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	472000
CY2023	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	403000
CY2022	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	448000
CY2023	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-66000
CY2022	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	8000
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-12000
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-9000
CY2023	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	510000
CY2022	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	23000
CY2023	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	460000
CY2022	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-302000
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2008000
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	772000
CY2023	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	9105000
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	10884000
CY2023	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1896000
CY2022	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	13207000
CY2023	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	11416000
CY2022	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	1607000
CY2023	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	320000
CY2022	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	39000
CY2023	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	172000
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	252000
CY2022	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	10000000
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-267000
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-14143000
CY2023	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	528000
CY2022	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-11701000
CY2023	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	10000000
CY2023	clst	Purchase Of Stock To Fund2022 Recognition And Retention Plan PurchaseOfStockToFund2022RecognitionAndRetentionPlan	415000
CY2022	clst	Purchase Of Stock To Fund2022 Recognition And Retention Plan PurchaseOfStockToFund2022RecognitionAndRetentionPlan	2340000
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	6315000
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	3798000
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-14041000
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	5539000
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-27412000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	13472000
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	40884000
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	19011000
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	13472000
CY2023	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	125000
CY2022	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	10000
CY2023	us-gaap	Interest Paid Net InterestPaidNet	1402000
CY2022	us-gaap	Interest Paid Net InterestPaidNet	496000
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;text-align:justify;margin:0pt 0pt 12pt 0pt;"><i style="font-style:italic;">Use of Estimates</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.5pt;text-align:justify;margin:0pt;"><span style="letter-spacing:0.2pt;">The preparation of financial statements in conformity with Generally Accepted Accounting Principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Material estimates that are particularly susceptible to significant change relate to the fair value of available-for-sale securities, the determination of the allowance for credit losses on financial assets held at amortized cost and the valuation for foreclosed assets.</span> While management uses its best judgment and reviews estimates and related assumptions periodically, <span style="letter-spacing:0.2pt;">actual results could differ from those estimates.</span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.5pt;text-align:justify;margin:0pt;"><span style="letter-spacing:0.2pt;visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.5pt;text-align:justify;margin:0pt;"><span style="letter-spacing:0.2pt;">A large majority of the Company’s investment securities are classified as available-for-sale and reported at fair value with changes in unrealized gains and losses, net of tax, included in other comprehensive income. The fair value of investment securities are highly sensitive to changes in market interest rates and the current and projected financial condition of the related issuer. Declines in fair value of available-for-sale securities may result in a charge to earnings through the provision for credit losses if management believes the Company will not be able to recover the full cost of the securities. </span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.5pt;text-align:justify;margin:0pt;"><span style="letter-spacing:0.2pt;visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;margin:0pt;"><span style="letter-spacing:0.2pt;visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.5pt;text-align:justify;margin:0pt;"><span style="letter-spacing:0.2pt;">A majority of the Company’s loans and foreclosed assets are secured by real estate in local markets which are largely rural. Accordingly, the ultimate collectability of a substantial portion of the Company’s loan portfolio and the recovery of the carrying amount of foreclosed assets are susceptible to changes in local market conditions.</span> <span style="letter-spacing:0.2pt;">While management uses available information to recognize losses on loans and foreclosed assets, further reductions in the carrying amount of loans and foreclosed assets may be necessary based on changes in local economic conditions. In addition, regulatory agencies, as an integral part of their examination process, periodically review the Company’s estimated losses on loans and foreclosed assets. While management is responsible for the establishment of the allowance for credit losses on loans and for adjusting such allowance through provisions for credit losses, as a result of such regulatory reviews management may determine that an increase or decrease in the allowance or provision for credit losses may be necessary. Because of these factors, it is reasonably possible that the estimated losses on loans and foreclosed assets may change materially in the near-term. However, the amount of the change that is reasonably possible cannot be estimated.</span></p>
CY2023	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.5pt;text-align:justify;margin:0pt;"><i style="font-style:italic;letter-spacing:0.2pt;">Reclassifications</i></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.5pt;text-align:justify;margin:0pt;"><span style="font-style:italic;letter-spacing:0.2pt;visibility:hidden;"></span></p><p style="font-family:'Times New Roman','Times','serif';font-size:10pt;min-height:11.5pt;text-align:justify;margin:0pt;">Certain amounts reported in prior periods, other than those related to the restatement mentioned in the previous paragraph, may have been reclassified to conform to the current period presentation. Such reclassifications had no effect on previously reported equity or net income.</p>
CY2022	us-gaap	Equity Securities Without Readily Determinable Fair Value Impairment Loss Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount	0
CY2023	us-gaap	Equity Securities Without Readily Determinable Fair Value Impairment Loss Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount	0
CY2023	clst	Federal Community Development Grant Receipts FederalCommunityDevelopmentGrantReceipts	437000
CY2022	clst	Federal Community Development Grant Receipts FederalCommunityDevelopmentGrantReceipts	171000
CY2022Q4	clst	Advertising Costs Capitalized Direct Response Advertising AdvertisingCostsCapitalizedDirectResponseAdvertising	0
CY2023Q4	clst	Advertising Costs Capitalized Direct Response Advertising AdvertisingCostsCapitalizedDirectResponseAdvertising	0
CY2023Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	13461000
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	2234000
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	11227000
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	91088000
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	19000
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	11505000
CY2023	us-gaap	Incremental Common Shares Attributable To Conversion Of Preferred Stock IncrementalCommonSharesAttributableToConversionOfPreferredStock	0
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	1807000
CY2023	us-gaap	Net Income Loss NetIncomeLoss	602000
CY2022	us-gaap	Net Income Loss NetIncomeLoss	180000
CY2023	us-gaap	Weighted Average Number Of Shares Common Stock Subject To Repurchase Or Cancellation WeightedAverageNumberOfSharesCommonStockSubjectToRepurchaseOrCancellation	4972000
CY2022	us-gaap	Weighted Average Number Of Shares Common Stock Subject To Repurchase Or Cancellation WeightedAverageNumberOfSharesCommonStockSubjectToRepurchaseOrCancellation	5290000
CY2023	us-gaap	Weighted Average Number Of Shares Employee Stock Ownership Plan Shares Not Committed To Be Released WeightedAverageNumberOfSharesEmployeeStockOwnershipPlanSharesNotCommittedToBeReleased	589000
CY2022	us-gaap	Weighted Average Number Of Shares Employee Stock Ownership Plan Shares Not Committed To Be Released WeightedAverageNumberOfSharesEmployeeStockOwnershipPlanSharesNotCommittedToBeReleased	433000
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	4383000
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	4857000
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	4387000
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	4857000
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.14
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.04
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.14
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.04
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	79701000
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	21000
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	9182000
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	70540000
CY2022Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	79602000
CY2022Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	13475000
CY2022Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	2751000
CY2022Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	10724000
CY2022	clst	Investment Securities Transferred Between Classifications InvestmentSecuritiesTransferredBetweenClassifications	0
CY2023	clst	Investment Securities Transferred Between Classifications InvestmentSecuritiesTransferredBetweenClassifications	0
CY2023	clst	Debt Securities Available For Sale Number Of Securities Sold DebtSecuritiesAvailableForSaleNumberOfSecuritiesSold	2
CY2023	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-92000
CY2023	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1900000
CY2023Q4	clst	Investment Securities Accrued Interest InvestmentSecuritiesAccruedInterest	241000
CY2022Q4	clst	Investment Securities Accrued Interest InvestmentSecuritiesAccruedInterest	257000
CY2022	clst	Number Of Investments In Single Issuer NumberOfInvestmentsInSingleIssuer	0
CY2023	clst	Number Of Investments In Single Issuer NumberOfInvestmentsInSingleIssuer	0
CY2022	clst	Investments In Single Issuer Threshold Aggregate Book Value As Percent Of Stockholders Equity InvestmentsInSingleIssuerThresholdAggregateBookValueAsPercentOfStockholdersEquity	0.10
CY2023	clst	Investments In Single Issuer Threshold Aggregate Book Value As Percent Of Stockholders Equity InvestmentsInSingleIssuerThresholdAggregateBookValueAsPercentOfStockholdersEquity	0.10
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	1700000
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	1643000
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	10676000
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	10226000
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	2334000
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	2095000
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	14909000
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	13673000
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	7124000
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	5899000
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	52416000
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	44998000
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	4003000
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	3233000
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	79701000
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	70540000
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Amortized Cost Basis HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	13461000
CY2023Q4	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue	11227000
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	1000000
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	962000
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	11496000
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	10634000
CY2022Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	2343000
CY2022Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	2031000
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	17139000
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	15699000
CY2022Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	7125000
CY2022Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	5611000
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	61453000
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	52307000
CY2022Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	4007000
CY2022Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	3082000
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	91088000
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	79602000
CY2022Q4	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Amortized Cost Basis HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	13475000
CY2022Q4	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue	10724000
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	554000
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1000
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	67339000
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	9181000
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	67893000
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	9182000
CY2023Q4	clst	Debt Securities Held To Maturity Continuous Unrealized Losses Position12 Months Or Longer Fair Value DebtSecuritiesHeldToMaturityContinuousUnrealizedLossesPosition12MonthsOrLongerFairValue	11227000
CY2023Q4	clst	Debt Securities Held To Maturity Continuous Unrealized Loss Position12 Months Or Longer Accumulated Losses DebtSecuritiesHeldToMaturityContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLosses	2234000
CY2023Q4	clst	Debt Securities Held To Maturity Unrealized Losses Position Fair Value DebtSecuritiesHeldToMaturityUnrealizedLossesPositionFairValue	11227000
CY2023Q4	clst	Debt Securities Held To Maturity Unrealized Loss Position Accumulated Losses DebtSecuritiesHeldToMaturityUnrealizedLossPositionAccumulatedLosses	2234000
CY2023Q4	clst	Debt Securities Held To Maturity And Available For Sale Continuous Unrealized Loss Position Less Than12 Months Fair Value DebtSecuritiesHeldToMaturityAndAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsFairValue	554000
CY2023Q4	clst	Debt Securities Held To Maturity And Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesHeldToMaturityAndAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1000
CY2023Q4	clst	Debt Securities Held To Maturity And Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Fair Value DebtSecuritiesHeldToMaturityAndAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerFairValue	78566000
CY2023Q4	clst	Debt Securities Held To Maturity And Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesHeldToMaturityAndAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	11415000
CY2023Q4	clst	Debt Securities Held To Maturity And Available For Sale Unrealized Loss Position Fair Value DebtSecuritiesHeldToMaturityAndAvailableForSaleUnrealizedLossPositionFairValue	79120000
CY2023Q4	clst	Debt Securities Held To Maturity And Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesHeldToMaturityAndAvailableForSaleUnrealizedLossPositionAccumulatedLoss	11416000
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	10361000
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	562000
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	67204000
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	10943000
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	77565000
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	11505000
CY2022Q4	clst	Debt Securities Held To Maturity Continuous Unrealized Losses Position Less Than12 Months Fair Value DebtSecuritiesHeldToMaturityContinuousUnrealizedLossesPositionLessThan12MonthsFairValue	120000
CY2022Q4	clst	Debt Securities Held To Maturity Continuous Unrealized Loss Position Less Than12 Months Accumulated Losses DebtSecuritiesHeldToMaturityContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLosses	6000
CY2022Q4	clst	Debt Securities Held To Maturity Continuous Unrealized Losses Position12 Months Or Longer Fair Value DebtSecuritiesHeldToMaturityContinuousUnrealizedLossesPosition12MonthsOrLongerFairValue	10604000
CY2022Q4	clst	Debt Securities Held To Maturity Continuous Unrealized Loss Position12 Months Or Longer Accumulated Losses DebtSecuritiesHeldToMaturityContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLosses	2745000
CY2022Q4	clst	Debt Securities Held To Maturity Unrealized Losses Position Fair Value DebtSecuritiesHeldToMaturityUnrealizedLossesPositionFairValue	10724000
CY2022Q4	clst	Debt Securities Held To Maturity Unrealized Loss Position Accumulated Losses DebtSecuritiesHeldToMaturityUnrealizedLossPositionAccumulatedLosses	2751000
CY2022Q4	clst	Debt Securities Held To Maturity And Available For Sale Continuous Unrealized Loss Position Less Than12 Months Fair Value DebtSecuritiesHeldToMaturityAndAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsFairValue	10481000
CY2022Q4	clst	Debt Securities Held To Maturity And Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesHeldToMaturityAndAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	568000
CY2022Q4	clst	Debt Securities Held To Maturity And Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Fair Value DebtSecuritiesHeldToMaturityAndAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerFairValue	77808000
CY2022Q4	clst	Debt Securities Held To Maturity And Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesHeldToMaturityAndAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	13688000
CY2022Q4	clst	Debt Securities Held To Maturity And Available For Sale Unrealized Loss Position Fair Value DebtSecuritiesHeldToMaturityAndAvailableForSaleUnrealizedLossPositionFairValue	88289000
CY2022Q4	clst	Debt Securities Held To Maturity And Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesHeldToMaturityAndAvailableForSaleUnrealizedLossPositionAccumulatedLoss	14256000
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	92
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	96
CY2022	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	144920000
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	133607000
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	2124000
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	1807000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	142796000
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	131800000
CY2023Q4	clst	Loans Receivable Accrued Interest LoansReceivableAccruedInterest	659000
CY2022Q4	clst	Loans Receivable Accrued Interest LoansReceivableAccruedInterest	411000
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	2276000
CY2022	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	-375000
CY2022	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	210000
CY2022	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	116000
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	1807000
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	173000
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	1951000
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	2124000
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	216000
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	1591000
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	1807000
CY2023Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	1171000
CY2023Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	143749000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	144920000
CY2022Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	2796000
CY2022Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	130811000
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	133607000
CY2023Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	1200000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	144920000
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	133607000
CY2023	clst	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Recovery FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearRecovery	1000
CY2023Q4	clst	Financing Receivable Excluding Accrued Interest Non Accrual With Allowance FinancingReceivableExcludingAccruedInterestNonAccrualWithAllowance	1606000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual No Allowance FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance	361000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual FinancingReceivableExcludingAccruedInterestNonaccrual	1967000
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual FinancingReceivableExcludingAccruedInterestNonaccrual	1494000
CY2022Q4	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	0
CY2023Q4	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	0
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Modified Accumulated FinancingReceivableExcludingAccruedInterestModifiedAccumulated	683000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Modified Accumulated FinancingReceivableExcludingAccruedInterestModifiedAccumulated	683000
CY2022	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	1000000.0
CY2023	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	1000000.0
CY2022Q4	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	0
CY2023Q4	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	0
CY2022Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	1927000
CY2022Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	869000
CY2022Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	3243000
CY2022Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	216000
CY2022	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	2910000
CY2022	us-gaap	Impaired Financing Receivable Interest Income Cash Basis Method ImpairedFinancingReceivableInterestIncomeCashBasisMethod	58000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	14632000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	15923000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	7214000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	8029000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	7360000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	63159000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	25172000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	3431000
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	144920000
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	6000
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	7000
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	13000
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	1000
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	2000
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	73000
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	102000
CY2023	clst	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Recovery FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearRecovery	2000
CY2023	clst	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Recovery FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearRecovery	1000
CY2023	clst	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Recovery FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearRecovery	119000
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	123000
CY2022Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	133607000
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	9890000
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	9718000
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3818000
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	3415000
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6072000
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6303000
CY2023	us-gaap	Depreciation Depreciation	403000
CY2022	us-gaap	Depreciation Depreciation	448000
CY2023Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	28183000
CY2023Q4	clst	Percentage Of Non Interest Bearing Deposits To Deposits PercentageOfNonInterestBearingDepositsToDeposits	0.170
CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	33657000
CY2022Q4	clst	Percentage Of Non Interest Bearing Deposits To Deposits PercentageOfNonInterestBearingDepositsToDeposits	0.204
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Negotiable Order Of Withdrawal Now InterestBearingDomesticDepositNegotiableOrderOfWithdrawalNOW	36867000
CY2023Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Notice Of Withdrawal PercentageOfInterestBearingDomesticDepositsToDepositsNoticeOfWithdrawal	0.223
CY2022Q4	us-gaap	Interest Bearing Domestic Deposit Negotiable Order Of Withdrawal Now InterestBearingDomesticDepositNegotiableOrderOfWithdrawalNOW	36991000
CY2022Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Notice Of Withdrawal PercentageOfInterestBearingDomesticDepositsToDepositsNoticeOfWithdrawal	0.224
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Money Market InterestBearingDomesticDepositMoneyMarket	15126000
CY2023Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Money Market PercentageOfInterestBearingDomesticDepositsToDepositsMoneyMarket	0.091
CY2022Q4	us-gaap	Interest Bearing Domestic Deposit Money Market InterestBearingDomesticDepositMoneyMarket	15734000
CY2022Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Money Market PercentageOfInterestBearingDomesticDepositsToDepositsMoneyMarket	0.095
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Savings InterestBearingDomesticDepositSavings	31518000
CY2023Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Savings PercentageOfInterestBearingDomesticDepositsToDepositsSavings	0.190
CY2022Q4	us-gaap	Interest Bearing Domestic Deposit Savings InterestBearingDomesticDepositSavings	26209000
CY2022Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Savings PercentageOfInterestBearingDomesticDepositsToDepositsSavings	0.159
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Certificates Of Deposits InterestBearingDomesticDepositCertificatesOfDeposits	53928000
CY2023Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Certificates Of Deposit PercentageOfInterestBearingDomesticDepositsToDepositsCertificatesOfDeposit	0.326
CY2022Q4	us-gaap	Interest Bearing Domestic Deposit Certificates Of Deposits InterestBearingDomesticDepositCertificatesOfDeposits	52503000
CY2022Q4	us-gaap	Percentage Of Interest Bearing Domestic Deposits To Deposits Certificates Of Deposit PercentageOfInterestBearingDomesticDepositsToDepositsCertificatesOfDeposit	0.318
CY2023Q4	us-gaap	Deposits Deposits	165622000
CY2023Q4	clst	Deposits Percentage DepositsPercentage	1.000
CY2022Q4	us-gaap	Deposits Deposits	165094000
CY2022Q4	clst	Deposits Percentage DepositsPercentage	1.000
CY2023Q4	us-gaap	Deposit Liability Uninsured DepositLiabilityUninsured	44600000
CY2022Q4	us-gaap	Deposit Liability Uninsured DepositLiabilityUninsured	43400000
CY2023Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	11200000
CY2022Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	8900000
CY2023Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	45467000
CY2023Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	6774000
CY2023Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	1068000
CY2023Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	459000
CY2023Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	160000
CY2023Q4	us-gaap	Time Deposits TimeDeposits	53928000
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	19378000
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	9198000
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	10000000.0
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	1200000
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	10000000
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	3000000
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	3000000
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	4000000
CY2023Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	20000000
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	48500000
CY2022Q4	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	34200000
CY2023Q4	clst	Bank Term Funding Program BankTermFundingProgram	2200000
CY2022Q4	us-gaap	Debt Instrument Unused Borrowing Capacity Amount DebtInstrumentUnusedBorrowingCapacityAmount	17800000
CY2023Q4	us-gaap	Debt Instrument Unused Borrowing Capacity Amount DebtInstrumentUnusedBorrowingCapacityAmount	17800000
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	93000
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-12000
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-21000
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	81000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-21000
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2023	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	143000
CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	33000
CY2023	clst	Effective Income Tax Rate Reconciliation Boli Income Amount EffectiveIncomeTaxRateReconciliationBoliIncomeAmount	86000
CY2022	clst	Effective Income Tax Rate Reconciliation Boli Income Amount EffectiveIncomeTaxRateReconciliationBoliIncomeAmount	66000
CY2023	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	15000
CY2022	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	13000
CY2023	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	36000
CY2022	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	24000
CY2023	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	3000
CY2022	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	1000
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	81000
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-21000
CY2023Q4	us-gaap	Capital Required To Be Well Capitalized CapitalRequiredToBeWellCapitalized	15184000
CY2023Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.100
CY2023Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	79468000
CY2023Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.3167
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	97000
CY2023Q4	us-gaap	Deferred Tax Assets Other Comprehensive Loss DeferredTaxAssetsOtherComprehensiveLoss	1924000
CY2022Q4	us-gaap	Deferred Tax Assets Other Comprehensive Loss DeferredTaxAssetsOtherComprehensiveLoss	2412000
CY2022Q4	clst	Deferred Tax Assets Tax Other Real Estate Owned DeferredTaxAssetsTaxOtherRealEstateOwned	102000
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	56000
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	31000
CY2023Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	54000
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CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	595000
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	667000
CY2023Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	1536000
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CY2021Q4	clst	Accumulated Retained Earnings Federal Income Tax Liability Not Recognized AccumulatedRetainedEarningsFederalIncomeTaxLiabilityNotRecognized	1900000
CY2022Q4	clst	Accumulated Retained Earnings Federal Income Tax Liability Not Recognized AccumulatedRetainedEarningsFederalIncomeTaxLiabilityNotRecognized	1900000
CY2021Q4	us-gaap	Deferred Tax Liability Not Recognized Amount Of Unrecognized Deferred Tax Liability Bad Debt Reserve For Tax Purposes Of Qualified Lender DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityBadDebtReserveForTaxPurposesOfQualifiedLender	0
CY2022Q4	us-gaap	Deferred Tax Liability Not Recognized Amount Of Unrecognized Deferred Tax Liability Bad Debt Reserve For Tax Purposes Of Qualified Lender DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityBadDebtReserveForTaxPurposesOfQualifiedLender	0
CY2023Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	79468000
CY2023Q4	us-gaap	Common Equity Tier One Capital Ratio CommonEquityTierOneCapitalRatio	0.5234
CY2023Q4	us-gaap	Common Equity Tier One Capital Required To Be Well Capitalized CommonEquityTierOneCapitalRequiredToBeWellCapitalized	9870000
CY2023Q4	us-gaap	Banking Regulation Common Equity Tier One Risk Based Capital Ratio Well Capitalized Minimum BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioWellCapitalizedMinimum	0.065
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CY2023Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized TierOneRiskBasedCapitalRequiredToBeWellCapitalized	12147000
CY2023Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.080
CY2023Q4	us-gaap	Capital Capital	81371000
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CY2023Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	2013000
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CY2022Q4	clst	Deposits From Related Parties DepositsFromRelatedParties	6100000
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CY2022	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.04
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CY2023	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	107000
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	128000
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CY2022Q4	us-gaap	Unearned Esop Shares UnearnedESOPShares	4000000.0
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CY2022Q4	us-gaap	Employee Stock Ownership Plan Esop Deferred Shares Fair Value EmployeeStockOwnershipPlanESOPDeferredSharesFairValue	5000000.0
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CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0150
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0427
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0326
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CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P8Y9M3D
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P8Y8M1D
CY2023Q4	clst	Impaired Loan Carrying Amount ImpairedLoanCarryingAmount	547000000
CY2022Q4	clst	Impaired Loan Carrying Amount ImpairedLoanCarryingAmount	1100000
CY2023	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	66000000
CY2022	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	0
CY2023	dei	Auditor Firm AuditorFirmId	447

Files In Submission

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$CLST
Catalyst Bancorp, Inc. Stock $clst

2024 Q1 Form 10-K Financial Statement

#000155837024004220 Filed on March 28, 2024

Income Statement

Balance Sheet

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Facts In Submission

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$CLST Catalyst Bancorp, Inc. Stock $clst

2024 Q1 Form 10-K Financial Statement

#000155837024004220 Filed on March 28, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CLST
Catalyst Bancorp, Inc. Stock $clst