Consolidated Statement of Stockholders' Equity (Unaudited) - 3 months ended Mar. 31, 2019 - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Additional Paid-In Capital	Retained Earnings
Beginning Balance, shares (in shares) at Dec. 31, 2018	29,611,989	29,611,989
Beginning Balance, Treasury stock, shares (in shares) at Dec. 31, 2018	(711,231)		(711,231)
Beginning Balance, amount at Dec. 31, 2018	$ 141,585	$ 296	$ (6,540)	$ (52)	$ 179,742	$ (31,861)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	$ 664				664
Exercise of stock options (in shares)	7,021	7,021
Exercise of stock options	$ 35	$ 0			35
Issuance of restricted stock (in shares)		185,204
Issuance of restricted stock	0	$ 1			(1)
Cash flow hedge, net of tax	(284)			(284)
Forfeiture of restricted stock (in shares)		(18,207)
Net loss	$ (7,924)					(7,924)
Ending Balance, shares (in shares) at Mar. 31, 2019	29,786,007
Ending Balance, Treasury stock, shares (in shares) at Mar. 31, 2019	(711,231)		(711,231)
Ending Balance, amount at Mar. 31, 2019	$ 134,076	$ 297	$ (6,540)	$ (336)	$ 180,440	$ (39,785)