Stock-Based Compensation Plans - Stock compensation expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock compensation	$ 960	$ 877	$ 1,280	$ 1,201
Stock option grants
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock compensation	20	16	39	33
Restricted stock awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock compensation	340	261	641	518
Annual director stock award
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock compensation	600	600	600	600
Employee stock grant
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock compensation	$ 0	$ 0	$ 0	$ 50