Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid In Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]
BALANCE at Dec. 31, 2014	$ 91,874	$ 319	$ 154,497	$ (57,659)	$ (5,283)
BALANCE, Shares at Dec. 31, 2014		31,839,087
BALANCE, Treasury Shares at Dec. 31, 2014					(300,000)
Net income	17,230			17,230
Issuance of common stock awards to employees		$ 1	(1)
Issuance of common stock awards to employees, Shares		130,613
Surrender of common stock awards by employees, Shares					(1,560)
Share-based compensation expense	1,232		1,232
Share-based compensation issued to Directors, Value	300		300
Share-based compensation issued to Directors, Shares		13,188
Tax benefit from stock plans	76		76
Common stock repurchase, Value	(6,100)				$ (6,100)
Common stock repurchase, Shares					(315,000)
BALANCE at Sep. 30, 2015	104,612	$ 320	156,104	(40,429)	$ (11,383)
BALANCE, Shares at Sep. 30, 2015		31,982,888
BALANCE, Treasury Shares at Sep. 30, 2015					(616,560)
BALANCE at Dec. 31, 2015	$ 114,483	$ 320	156,688	(31,142)	$ (11,383)
BALANCE, Shares at Dec. 31, 2015	31,982,888	31,982,888
BALANCE, Treasury Shares at Dec. 31, 2015	(616,560)				(616,560)
Net income	$ 27,355			27,355
Issuance of common stock awards to employees		$ 1	(1)
Issuance of common stock awards to employees, Shares		143,528
Surrender of common stock awards by employees, Value	(836)				$ (836)
Surrender of common stock awards by employees, Shares					(33,091)
Share-based compensation expense	1,231		1,231
Share-based compensation issued to Directors, Value	300		300
Share-based compensation issued to Directors, Shares		8,760
BALANCE at Sep. 30, 2016	$ 142,533	$ 321	$ 158,218	$ (3,787)	$ (12,219)
BALANCE, Shares at Sep. 30, 2016	32,135,176	32,135,176
BALANCE, Treasury Shares at Sep. 30, 2016	(649,651)				(649,651)