Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Other Comprehensive Income (Loss)	Additional Paid-In Capital	Retained Earnings
Beginning balance, shares at Dec. 31, 2015		27,992,589
Beginning balance at Dec. 31, 2015	$ 227,714	$ 279	$ (6,540)	$ (145)	$ 168,736	$ 65,384
Beginning treasury stock, shares at Dec. 31, 2015			(711,231)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	$ 2,280				2,280
Exercise of stock options, shares	13,850	13,850
Exercise of stock options	$ 67	$ 0			67
Issue restricted stock, shares		407,002
Issuance of restricted stock	0	$ 4			(4)
Cash flow hedge, net of tax	(237)			(237)
Forfeiture of restricted stock		7,591
Net (loss) income	(3,620)					(3,620)
Ending balance, shares at Dec. 31, 2016		28,405,850
Ending balance at Dec. 31, 2016	226,204	$ 283	$ (6,540)	(382)	171,079	61,764
Ending treasury stock, shares at Dec. 31, 2016			(711,231)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	2,303				2,303
Deferred tax adjustment | Accounting Standards Update 2014-09	$ 683					683
Exercise of stock options, shares	229,551	229,551
Exercise of stock options	$ 1,320	$ 2			1,318
Issue restricted stock, shares		345,913
Issuance of restricted stock	0	$ 3			(3)
Cash flow hedge, net of tax	356			356
Forfeiture of restricted stock		(120,353)
Net (loss) income	$ 400					400
Ending balance, shares at Dec. 31, 2017	28,860,961	28,860,961
Ending balance at Dec. 31, 2017	$ 231,266	$ 288	$ (6,540)	(26)	174,697	62,847
Ending treasury stock, shares at Dec. 31, 2017	(711,231)		(711,231)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	$ 2,238				2,238
Exercise of stock options, shares	488,303	488,303
Exercise of stock options	$ 2,815	$ 5			2,810
Issue restricted stock, shares		333,864
Issuance of restricted stock	0	$ 3			(3)
Cash flow hedge, net of tax	(26)			(26)
Forfeiture of restricted stock		(71,139)
Net (loss) income	$ (94,422)					(94,422)
Ending balance, shares at Dec. 31, 2018	29,611,989	29,611,989
Ending balance at Dec. 31, 2018	$ 141,585	$ 296	$ (6,540)	$ (52)	$ 179,742	$ (31,861)
Ending treasury stock, shares at Dec. 31, 2018	(711,231)		(711,231)