Acquisition (Details)	3 Months Ended
	Mar. 31, 2024 USD ($) shares	Dec. 31, 2023 USD ($) $ / shares shares	Mar. 31, 2023 USD ($)	Apr. 12, 2024 USD ($) branch $ / shares shares	Nov. 01, 2023 USD ($) branch $ / shares shares	Dec. 31, 2022 USD ($)
Asset Acquisition [Line Items]
Goodwill	$ 79,559,000	$ 79,509,000
Merger-related expenses	$ 775,000		$ 25,000
Common stock, shares, outstanding (in shares) | shares	13,224,276	13,173,569
Assets	$ 2,283,151,000	$ 2,291,592,000
Loans, net of allowance for credit losses of $10,557 and $10,525 at March 31, 2024 and December 31, 2023, respectively	1,645,797,000	1,712,946,000
Total	1,858,493,000	1,824,389,000
Stockholders' Equity Attributable to Parent	233,663,000	235,303,000	$ 204,072,000			$ 200,675,000
Cincinnati Bancorp, Inc.
Asset Acquisition [Line Items]
Number Offices Operated By Company To Be Acquired | branch					4
Business Combination, Consideration Transferred, Exchange Ratio, Equity Interests Issued And Issuable | shares					0.9274
Business Combination, Consideration To Be Transferred, Cash Payment Per Share Of Acquiree Stock					$ 17.21
Business Combination, Consideration To Be Transferred, Per-Centage of Acquiree Common Stock To Be Transferred For Common Stock Of Acquiror					80.00%
Business Combination, Consideration, Percent Issued Or To Be Issued In The Form Of Cash					20.00%
Business Combination, Consideration Transferred, Cash		9,475,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable		28,576,000
Business Combination, Consideration Transferred		$ 38,051,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents					$ 11,368,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities					5,210,000
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Federal Home Loan Bank Stock					7,508,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets					236,692,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment					2,767,000
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Operating Lease Right-Of-Use Assets					64,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					8,391,000
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Company Owned Life Insurance					4,413,000
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets					4,451,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets					12,896,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets					293,760,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Liabilities					210,532,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities					55,999,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-Term Debt					5,963,000
Business Combination Recognized, Identifiable Assets Acquired And Liabilities Assumed, Operating Lease Liabilities					64,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other					3,489,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other					276,047,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net					17,713,000
Goodwill					$ 20,338,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares		2,042,598
Business Acquisition, Share Price | $ / shares					$ 13.99
Financing Receivable, Excluding Accrued Interest, Purchased without Credit Deterioration, Amount At Fair Value					$ 231,900,000
Financing Receivable, Excluding Accrued Interest, Purchased without Credit Deterioration, Amount at Unpaid Principal Balance					258,600,000
Financing Receivable, Excluding Accrued Interest, Purchased without Credit Deterioration, Provision for Credit Loss at Acquisition Date					$ 1,722,000
Merger-related expenses	477,000
Goodwill, Period Increase (Decrease)	50,000
Eagle Financial Bancorp, Inc.
Asset Acquisition [Line Items]
Business Combination, Consideration Transferred, Cash	10,256,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	12,891,000
Business Combination, Consideration Transferred	$ 23,147,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares	918,128
Merger-related expenses	$ 298,000
Common stock, shares, outstanding (in shares) | shares		1,342,275
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares | shares		115,807
Exercisable stock option, weighted average exercise price (in dollars per share) | $ / shares		$ 16.18
Assets		$ 174,300,000
Loans, net of allowance for credit losses of $10,557 and $10,525 at March 31, 2024 and December 31, 2023, respectively		140,400,000
Total		136,700,000
Stockholders' Equity Attributable to Parent		$ 26,000,000
Eagle Financial Bancorp, Inc. | Subsequent Event
Asset Acquisition [Line Items]
Number Offices Operated By Company To Be Acquired | branch				3
Business Combination, Consideration Transferred, Exchange Ratio, Equity Interests Issued And Issuable | shares				1.1401
Business Combination, Consideration To Be Transferred, Cash Payment Per Share Of Acquiree Stock				$ 19.10
Business Acquisition, Share Price | $ / shares				$ 14.04
Eagle Financial Bancorp, Inc. | Minimum | Subsequent Event
Asset Acquisition [Line Items]
Business Combination, Consideration To Be Transferred, Per-Centage of Acquiree Common Stock To Be Transferred For Common Stock Of Acquiror				60.00%
Eagle Financial Bancorp, Inc. | Maximum | Subsequent Event
Asset Acquisition [Line Items]
Business Combination, Consideration To Be Transferred, Per-Centage of Acquiree Common Stock To Be Transferred For Common Stock Of Acquiror				70.00%