Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance at Dec. 31, 2015	$ 77,628	$ 9,246	$ (69,146)	$ (28,667)	$ (10,939)
Balance (in shares) at Dec. 31, 2015	18,868
Share-based compensation (in shares)	99
Share-based compensation	$ 503	119			622
Vested restricted stock issued (in shares)	19
Vested restricted stock issued	$ 119	(119)
Shares cancelled to pay tax liability (in shares)	(50)
Shares cancelled to pay tax liability	$ (264)				(264)
Pension, net of income taxes of $0				507	507
Net income			12,007		12,007
Balance at Jun. 30, 2016	$ 77,986	9,246	(57,139)	(28,160)	1,933
Balance (in shares) at Jun. 30, 2016	18,936
Balance at Dec. 31, 2016	$ 78,123	9,246	(47,332)	(22,295)	17,742
Balance (in shares) at Dec. 31, 2016	18,958
Share-based compensation	$ 767	207			974
Vested restricted stock issued (in shares)	29
Vested restricted stock issued	$ 207	(207)
Shares cancelled to pay tax liability (in shares)	(59)
Shares cancelled to pay tax liability	$ (568)				(568)
Pension, net of income taxes of $0				408	408
Net income			12,313		12,313
Balance at Jun. 30, 2017	$ 78,529	$ 9,246	$ (35,019)	$ (21,887)	$ 30,869
Balance (in shares) at Jun. 30, 2017	19,022