Nature of Operations and Summary of Significant Accounting Policies - Financial information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Nature of Operations and Summary of Significant Accounting Policies
Deferred compensation	$ 645	$ 521
Total liabilities	160,962	157,534
Deferred compensation liability	400	400
Total stockholders' equity	$ 36,675	$ 35,919	$ 20,139
Earning per share (basic) (in dollar per share)	$ 0.57	$ 0.63
Earning per share (diluted) (in dollar per share)	$ 0.57	$ 0.63
Weighted-average shares outstanding (basic) (in shares)	1,594,547	1,592,520
Weighted-average shares outstanding (diluted) (in shares)	1,594,547	1,592,520
Deferred Comp Liability
Nature of Operations and Summary of Significant Accounting Policies
Total stockholders' equity	$ 400	$ 400
As Reported
Nature of Operations and Summary of Significant Accounting Policies
Deferred compensation		921
Total liabilities		157,934
Total stockholders' equity		$ 35,519
Earning per share (basic) (in dollar per share)		$ 0.65
Earning per share (diluted) (in dollar per share)		$ 0.65
Weighted-average shares outstanding (basic) (in shares)		1,552,520
Weighted-average shares outstanding (diluted) (in shares)		1,552,520
Adjustment
Nature of Operations and Summary of Significant Accounting Policies
Deferred compensation		$ (400)
Total liabilities		(400)
Deferred compensation liability		400
Total stockholders' equity		$ 400
Earning per share (basic) (in dollar per share)		$ (0.02)
Earning per share (diluted) (in dollar per share)		$ (0.02)
Weighted-average shares outstanding (basic) (in shares)		40,000
Weighted-average shares outstanding (diluted) (in shares)		40,000
Adjustment | Deferred Comp Liability
Nature of Operations and Summary of Significant Accounting Policies
Total stockholders' equity		$ 400