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, 2018	30,245
Balance at Dec. 31, 2018	$ 302	$ 100,742	$ 153,830	$ 254,874
Stock-based compensation	$ 0	1,012	0	1,012
Stock issued on vesting of RSUs (in shares)	4
Stock issued on vesting of RSUs	$ 0	0	0	0
Taxes paid on vesting of RSUs (in shares)	(2)
Taxes paid on vesting of RSUs	$ 0	(7)	0	(7)
Dividends	0	0	(2,483)	(2,483)
Net income (loss)	$ 0	0	3,656	3,656
Balance (in shares) at Jun. 30, 2019	30,247
Balance at Jun. 30, 2019	$ 302	101,747	155,003	257,052
Balance (in shares) at Mar. 31, 2019	30,245
Balance at Mar. 31, 2019	$ 302	101,236	159,589	261,127
Stock-based compensation	$ 0	518	0	518
Stock issued on vesting of RSUs (in shares)	4
Stock issued on vesting of RSUs	$ 0	0	0	0
Taxes paid on vesting of RSUs (in shares)	(2)
Taxes paid on vesting of RSUs	$ 0	(7)	0	(7)
Dividends	0	0	(1,242)	(1,242)
Net income (loss)	$ 0	0	(3,344)	(3,344)
Balance (in shares) at Jun. 30, 2019	30,247
Balance at Jun. 30, 2019	$ 302	101,747	155,003	257,052
Balance (in shares) at Dec. 31, 2019	30,420
Balance at Dec. 31, 2019	$ 304	102,215	89,011	191,530
Stock-based compensation	$ 0	636	0	636
Stock issued on vesting of RSUs (in shares)	70
Stock issued on vesting of RSUs	$ 1	(1)	0	0
Taxes paid on vesting of RSUs (in shares)	(25)
Taxes paid on vesting of RSUs	$ 0	(17)	0	(17)
Dividends	0	0	(1,236)	(1,236)
Net income (loss)	$ 0	0	(3,406)	(3,406)
Balance (in shares) at Jun. 30, 2020	30,465
Balance at Jun. 30, 2020	$ 305	102,833	84,369	187,507
Balance (in shares) at Mar. 31, 2020	30,420
Balance at Mar. 31, 2020	$ 304	102,534	84,115	186,953
Stock-based compensation	$ 0	317	0	317
Stock issued on vesting of RSUs (in shares)	70
Stock issued on vesting of RSUs	$ 1	(1)	0	0
Taxes paid on vesting of RSUs (in shares)	(25)
Taxes paid on vesting of RSUs	$ 0	(17)	0	(17)
Dividends	0	0	0	0
Net income (loss)	$ 0	0	254	254
Balance (in shares) at Jun. 30, 2020	30,465
Balance at Jun. 30, 2020	$ 305	$ 102,833	$ 84,369	$ 187,507