Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Class A Common Stock Common Stock.	Class B Common Stock Common Stock.	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Total
Balance at Dec. 31, 2022	$ 78	$ 0	$ 71,664	$ 143,896	$ (37,109)	$ 178,529
Balance (in shares) at Dec. 31, 2022	7,867	0
Net income	$ 0	$ 0	0	9,500		9,500
Issuance of restricted stock	$ 2	$ 0	(2)
Issuance of restricted stock (in shares)	140	0
Dividends declared per common share	$ 0	$ 0	0	(18,625)		(18,625)
Compensation expense related to restricted stock awards	0	0	1,116			1,116
Purchase of shares held in treasury	0	0	0		(227)	(227)
401(k) plan contribution	0	0	(185)		441	256
Balance at Dec. 31, 2023	$ 80	$ 0	72,593	134,771	(36,895)	170,549
Balance (in shares) at Dec. 31, 2023	8,007	0
Net income	$ 0	$ 0	0	3,460		3,460
Issuance of restricted stock	$ 2	$ 0	(2)
Issuance of restricted stock (in shares)	177	0
Forfeiture of restricted stock	$ 0	$ 0	0
Forfeiture of restricted stock (in shares)	(1)	0
Dividends declared per common share	$ 0	$ 0	0	(10,015)		(10,015)
Compensation expense related to restricted stock awards	0	0	1,950			1,950
Purchase of shares held in treasury	0	0	0		(290)	(290)
401(k) plan contribution	0	0	(207)		475	268
Balance at Dec. 31, 2024	$ 82	$ 0	$ 74,334	$ 128,216	$ (36,710)	$ 165,922
Balance (in shares) at Dec. 31, 2024	8,183	0