CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Class A Common Stock Common Stock.	Class A Common Stock	Class B Common Stock Common Stock.	Class B Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Total
Balance at Dec. 31, 2021	$ 68		$ 9		$ 70,035	$ 164,246	$ (37,439)	$ 196,919
Balance, shares at Dec. 31, 2021	6,835	6,835	965	965
Net income	$ 0		$ 0		0	1,204	0	1,204
Dividends declared per common share	0		0		0	(968)	0	(968)
Compensation expense related to restricted stock awards	0		0		339	0	0	339
401(k) plan contribution	0		0		(229)	0	477	248
Balance at Mar. 31, 2022	$ 68		$ 9		70,145	164,482	(36,962)	197,742
Balance, shares at Mar. 31, 2022	6,835		965
Balance at Dec. 31, 2021	$ 68		$ 9		70,035	164,246	(37,439)	196,919
Balance, shares at Dec. 31, 2021	6,835	6,835	965	965
Net income								5,027
Balance at Jun. 30, 2022	$ 68		$ 9		70,483	167,095	(36,962)	200,693
Balance, shares at Jun. 30, 2022	6,835		965
Balance at Mar. 31, 2022	$ 68		$ 9		70,145	164,482	(36,962)	197,742
Balance, shares at Mar. 31, 2022	6,835		965
Net income	$ 0		$ 0		0	3,823	0	3,823
Dividends declared per common share	0		0		0	(1,210)	0	(1,210)
Compensation expense related to restricted stock awards	0		0		338	0	0	338
Purchase of shares held in treasury	0		0		0	0	0	0
Balance at Jun. 30, 2022	$ 68		$ 9		70,483	167,095	(36,962)	200,693
Balance, shares at Jun. 30, 2022	6,835		965
Balance at Dec. 31, 2022	$ 78		$ 0		71,664	143,896	(37,109)	178,529	[1]
Balance, shares at Dec. 31, 2022	7,867	7,867	0	0
Net income	$ 0		$ 0		0	920	0	920
Dividends declared per common share	0		0		0	(1,531)	0	(1,531)
Compensation expense related to restricted stock awards	0		0		245	0	0	245
401(k) plan contribution	0		0		(185)	0	441	256
Balance at Mar. 31, 2023	$ 78		$ 0		71,724	143,285	(36,668)	178,419
Balance, shares at Mar. 31, 2023	7,867		0
Balance at Dec. 31, 2022	$ 78		$ 0		71,664	143,896	(37,109)	178,529	[1]
Balance, shares at Dec. 31, 2022	7,867	7,867	0	0
Net income								4,270
Balance at Jun. 30, 2023	$ 78		$ 0		71,972	145,104	(36,668)	180,486
Balance, shares at Jun. 30, 2023	7,867	7,867	0	0
Balance at Mar. 31, 2023	$ 78		$ 0		71,724	143,285	(36,668)	178,419
Balance, shares at Mar. 31, 2023	7,867		0
Net income	$ 0		$ 0		0	3,350	0	3,350
Forfeiture of restricted stock	$ 0		$ 0		0	0	0	0
Forfeiture of restricted stock (in shares)	0		0
Dividends declared per common share	$ 0		$ 0		0	(1,531)	0	(1,531)
Compensation expense related to restricted stock awards	0		0		248	0	0	248
Purchase of shares held in treasury	0		0		0	0	0	0
Balance at Jun. 30, 2023	$ 78		$ 0		$ 71,972	$ 145,104	$ (36,668)	$ 180,486
Balance, shares at Jun. 30, 2023	7,867	7,867	0	0

[1] The balance sheet at December 31, 2022 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.