CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 4,452	$ 1,724	$ 4,613	$ (63)
Unrealized gain (loss) on derivative hedge transactions, net of tax	46	(3)	129	48
Comprehensive income (loss)	$ 4,498	$ 1,721	$ 4,742	$ (15)