Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2018	$ 358,335	$ 1,532	$ 363,655	$ 467	$ (7,319)
Balance, shares at Dec. 31, 2018		153,202,000
Restricted stock issued and vesting of restricted stock units, net		$ 21	(21)
Restricted stock issued and vesting of restricted stock units net, shares		2,145,000
Shares repurchased	(2,005)	$ (2)	(2,003)
Shares repurchased, shares		(311,000)
Exercise of stock options, net	14		14
Exercise of stock options net, shares		20,000
Stock-based compensation	3,072		3,072
Other comprehensive income	291			291
Dividends	(5,097)		0		(5,097)
Net income (loss)	8,824				8,824
Balance at Mar. 31, 2019	363,434	$ 1,551	364,717	758	(3,592)
Balance, shares at Mar. 31, 2019		155,056,000
Balance at Dec. 31, 2019	$ 337,412	$ 1,553	352,658	945	(17,744)
Balance, shares at Dec. 31, 2019	155,264,000	155,264,000
Restricted stock issued and vesting of restricted stock units, net		$ 14	(14)
Restricted stock issued and vesting of restricted stock units net, shares		1,438,000
Shares repurchased	$ (1,495)	$ (3)	(1,492)
Shares repurchased, shares		(385,000)
Exercise of stock options, net	240		240
Exercise of stock options net, shares		107,000
Stock-based compensation	3,239		3,239
Other comprehensive income	(853)			(853)
Dividends	(5,136)		(5,136)
Net income (loss)	(8,638)				(8,638)
Balance at Mar. 31, 2020	$ 324,769	$ 1,564	$ 349,495	$ 92	$ (26,382)
Balance, shares at Mar. 31, 2020	156,424,000	156,424,000