Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2019	30,420
Balance at Dec. 31, 2019	$ 304	$ 102,215	$ 89,011	$ 191,530
Stock-based compensation		927		927
Net income (loss)			(1,483)	(1,483)
Stock issued on vesting of RSUs (in shares)	72
Taxes paid on vesting of RSUs (in shares)	26
Taxes paid on vesting of RSUs		(18)	0	(18)
Balance (in shares) at Sep. 30, 2020	30,466
Balance at Sep. 30, 2020	$ 305	103,123	86,292	189,720
Taxes paid on vesting of RSUs (in shares)	(26)
Stock issued on vesting of RSUs	$ 1	(1)
Dividends			(1,236)	(1,236)
Balance (in shares) at Jun. 30, 2020	30,465
Balance at Jun. 30, 2020	$ 305	102,833	84,369	187,507
Stock-based compensation		291		291
Net income (loss)		0	1,923	1,923
Stock issued on vesting of RSUs (in shares)	2
Taxes paid on vesting of RSUs (in shares)	1
Taxes paid on vesting of RSUs		(1)		(1)
Balance (in shares) at Sep. 30, 2020	30,466
Balance at Sep. 30, 2020	$ 305	103,123	86,292	189,720
Taxes paid on vesting of RSUs (in shares)	(1)
Balance (in shares) at Dec. 31, 2020	30,610
Balance at Dec. 31, 2020	$ 306	103,399	81,555	185,260
Stock-based compensation		834		834
Net income (loss)			3,990	3,990
Stock issued on vesting of RSUs (in shares)	4
Taxes paid on vesting of RSUs (in shares)	(1)
Taxes paid on vesting of RSUs		(2)		(2)
Balance (in shares) at Sep. 30, 2021	30,613
Balance at Sep. 30, 2021	$ 306	104,231	85,545	190,082
Taxes paid on vesting of RSUs (in shares)	1
Balance (in shares) at Jun. 30, 2021	30,613
Balance at Jun. 30, 2021	$ 306	103,964	77,559	181,829
Stock-based compensation		267		267
Net income (loss)			7,986	7,986
Balance (in shares) at Sep. 30, 2021	30,613
Balance at Sep. 30, 2021	$ 306	$ 104,231	$ 85,545	$ 190,082