Summary of Significant Accounting Policies - Calculation Of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accounting Standards Update and Change in Accounting Principle [Abstract]
Net income	$ 36,971	$ 25,394	$ 30,741
Basic weighted average common shares outstanding (in shares)	5,502,797	5,601,471	5,765,088
Dilutive effect of potential common shares from awards granted under equity incentive program (in shares)	81,000	60,000	64,000
Total (in shares)	5,583,983	5,661,460	5,829,412
Earnings per common share
Basic (in USD per share)	$ 6.72	$ 4.53	$ 5.33
Diluted (in USD per share)	$ 6.62	$ 4.49	$ 5.27