Earnings per Common Share - Calculations of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Net Income (Loss)	$ (4,644)	$ 2,176	$ (524)	$ 6,757
Voting Common Stock dividends	$ 0.1	$ 0.09	$ 0.3	$ 0.27
Warrant dividends	$ 12	$ 12	$ 38	$ 34
Series A Nonvoting Common Stock [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Voting Common Stock dividends	$ 138	$ 124	$ 414	$ 373
Warrant dividends	$ 12	$ 12	$ 38	$ 34
Undistributed earnings allocated to participating securities	(4,097)	1,257	(1,859)	3,950
Net income available to common shareholders- Voting	$ (1,031)	$ 485	$ (117)	$ 1,517
Basic weighted average common shares outstanding- Voting	1,380	1,380	1,380	1,380
Diluted weighted average common shares outstanding- Voting	1,380	1,380	1,380	1,380
Voting Earnings per common share- basic	$ (0.75)	$ 0.35	$ (0.09)	$ 1.1
Voting Earnings per common share - diluted	(0.75)	0.35	(0.09)	1.1
Voting Common Stock [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Voting Common Stock dividends	$ 472	$ 422	$ 1,414	$ 1,256
Undistributed earnings allocated to participating securities	$ (1,275)	$ 395	$ (579)	$ 1,248
Net income available to common shareholders- Voting	$ (3,519)	$ 1,645	$ (397)	$ 5,102
Basic weighted average common shares outstanding- Voting	4,714	4,671	4,708	4,640
Diluted weighted average common shares outstanding- Voting	4,714	4,671	4,708	4,640
Voting Earnings per common share- basic	$ (0.75)	$ 0.35	$ (0.09)	$ 1.1
Voting Earnings per common share - diluted	$ (0.75)	$ 0.35	$ (0.09)	$ 1.1