Loans and Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2022	Dec. 31, 2021
Loans Receivable [Member]
Loans and Allowance for Credit Losses
Recorded Balance	$ 9,048
Impaired Financing Receivable, Unpaid Principal Balance	10,109	$ 4,473	$ 5,202
Impaired Financing Receivable, Related Allowance	713	245	495
Impaired Financing Receivable, Average Recorded Investment	9,739
Impaired Financing Receivable Interest Income Recognized	533
One- to four-family residential construction
Loans and Allowance for Credit Losses
Recorded Balance	0
Impaired Financing Receivable, Unpaid Principal Balance	0
Impaired Financing Receivable, Related Allowance	0
Impaired Financing Receivable, Average Recorded Investment	0
Impaired Financing Receivable Interest Income Recognized	0
Subdivision construction
Loans and Allowance for Credit Losses
Recorded Balance	20
Impaired Financing Receivable, Unpaid Principal Balance	20
Impaired Financing Receivable, Related Allowance	0
Impaired Financing Receivable, Average Recorded Investment	115
Impaired Financing Receivable Interest Income Recognized	3
Land development | Land development [Member]
Loans and Allowance for Credit Losses
Recorded Balance	0
Impaired Financing Receivable, Unpaid Principal Balance	0
Impaired Financing Receivable, Related Allowance	0
Impaired Financing Receivable, Average Recorded Investment	0
Impaired Financing Receivable Interest Income Recognized	0
Land development | Loans Receivable [Member]
Loans and Allowance for Credit Losses
Impaired Financing Receivable, Unpaid Principal Balance		384	468
Commercial Loan [Member] | Commercial Loan [Member]
Loans and Allowance for Credit Losses
Recorded Balance	0
Impaired Financing Receivable, Unpaid Principal Balance	0
Impaired Financing Receivable, Related Allowance	0
Impaired Financing Receivable, Average Recorded Investment	0
Impaired Financing Receivable Interest Income Recognized	0
Owner occupied one- to four-family residential
Loans and Allowance for Credit Losses
Recorded Balance	3,457
Impaired Financing Receivable, Unpaid Principal Balance	3,776
Impaired Financing Receivable, Related Allowance	90
Impaired Financing Receivable, Average Recorded Investment	2,999
Impaired Financing Receivable Interest Income Recognized	169
Owner occupied one- to four-family residential | Loans Receivable [Member]
Loans and Allowance for Credit Losses
Impaired Financing Receivable, Unpaid Principal Balance		1,637	1,980
Impaired Financing Receivable, Related Allowance		40	18
Non-owner occupied one- to four-family residential
Loans and Allowance for Credit Losses
Recorded Balance	69
Impaired Financing Receivable, Unpaid Principal Balance	106
Impaired Financing Receivable, Related Allowance	0
Impaired Financing Receivable, Average Recorded Investment	309
Impaired Financing Receivable Interest Income Recognized	18
Commercial Real Estate [Member] | Loans Receivable [Member]
Loans and Allowance for Credit Losses
Impaired Financing Receivable, Unpaid Principal Balance		1,571	2,217
Impaired Financing Receivable, Related Allowance			397
Commercial Real Estate [Member] | Commercial Real Estate [Member]
Loans and Allowance for Credit Losses
Recorded Balance	3,438
Impaired Financing Receivable, Unpaid Principal Balance	3,472
Impaired Financing Receivable, Related Allowance	445
Impaired Financing Receivable, Average Recorded Investment	3,736
Impaired Financing Receivable Interest Income Recognized	135
Other residential
Loans and Allowance for Credit Losses
Recorded Balance	0
Impaired Financing Receivable, Unpaid Principal Balance	0
Impaired Financing Receivable, Related Allowance	0
Impaired Financing Receivable, Average Recorded Investment	0
Impaired Financing Receivable Interest Income Recognized	0
Commercial business
Loans and Allowance for Credit Losses
Recorded Balance	166
Impaired Financing Receivable, Unpaid Principal Balance	551
Impaired Financing Receivable, Related Allowance	14
Impaired Financing Receivable, Average Recorded Investment	800
Impaired Financing Receivable Interest Income Recognized	34
Commercial business | Loans Receivable [Member]
Loans and Allowance for Credit Losses
Impaired Financing Receivable, Unpaid Principal Balance		586
Impaired Financing Receivable, Related Allowance		125
Industrial Revenue Bonds [Member] | Industrial Revenue Bonds [Member]
Loans and Allowance for Credit Losses
Recorded Balance	0
Impaired Financing Receivable, Unpaid Principal Balance	0
Impaired Financing Receivable, Related Allowance	0
Impaired Financing Receivable, Average Recorded Investment	0
Impaired Financing Receivable Interest Income Recognized	0
Consumer auto | Consumer auto
Loans and Allowance for Credit Losses
Recorded Balance	865
Impaired Financing Receivable, Unpaid Principal Balance	964
Impaired Financing Receivable, Related Allowance	140
Impaired Financing Receivable, Average Recorded Investment	932
Impaired Financing Receivable Interest Income Recognized	91
Consumer other
Loans and Allowance for Credit Losses
Recorded Balance	403
Impaired Financing Receivable, Unpaid Principal Balance	552
Impaired Financing Receivable, Related Allowance	19
Impaired Financing Receivable, Average Recorded Investment	298
Impaired Financing Receivable Interest Income Recognized	47
Consumer other | Loans Receivable [Member]
Loans and Allowance for Credit Losses
Impaired Financing Receivable, Unpaid Principal Balance		160	160
Impaired Financing Receivable, Related Allowance		80	80
Home equity lines of credit | Loans Receivable [Member]
Loans and Allowance for Credit Losses
Impaired Financing Receivable, Unpaid Principal Balance		$ 135
Home equity lines of credit | Home equity lines of credit
Loans and Allowance for Credit Losses
Recorded Balance	630
Impaired Financing Receivable, Unpaid Principal Balance	668
Impaired Financing Receivable, Related Allowance	5
Impaired Financing Receivable, Average Recorded Investment	550
Impaired Financing Receivable Interest Income Recognized	$ 36
Home equity lines of credit | Home equity lines of credit | Loans Receivable [Member]
Loans and Allowance for Credit Losses
Impaired Financing Receivable, Unpaid Principal Balance			$ 377