Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2017	45,427,030
Balance at Dec. 31, 2017	$ 5	$ 42,498	$ 63,819		$ 106,322
Stock-based compensation (in shares)
Stock-based compensation		866			866
Issuance of stock for equity compensation plans, net (in shares)	349,643
Issuance of stock for equity compensation plans, net		(4,179)			(4,179)
Repurchase of shares and warrants (in shares)	(9,030)
Repurchase of shares and warrants		(854)			(854)
Net income (loss)			10,796		10,796
Balance (in shares) at Mar. 31, 2018	45,767,643
Balance at Mar. 31, 2018	$ 5	38,331	74,615		112,951
Balance (in shares) at Dec. 31, 2018	45,814,925
Balance at Dec. 31, 2018	$ 5	41,539	75,171	(671)	116,044
Stock-based compensation (in shares)
Stock-based compensation		753			753
Issuance of stock for equity compensation plans, net (in shares)	(44,315)
Issuance of stock for equity compensation plans, net		(1,167)			(1,167)
Repurchase of shares and warrants (in shares)	(1,895)
Repurchase of shares and warrants		(23)			(23)
Other comprehensive loss, net				(1,638)	(1,638)
Net income (loss)			14,673		14,673
Balance (in shares) at Mar. 31, 2019	45,768,715
Balance at Mar. 31, 2019	$ 5	$ 41,102	$ 89,844	$ (2,309)	$ 128,642