CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
Net loss	$ (6,951)	$ (22,618)
Other comprehensive loss:
Unrealized loss on cash flow hedges (net of tax benefit of $924 for three months ended March 31, 2019 and tax benefit of $702 for three months ended March 31, 2018)	(2,936)	(2,290)
Unrealized gain (loss) on defined benefit plan (net of tax provision of $2 for three months ended March 31, 2019 and tax benefit of $105 for three months ended March 31, 2018)	6	(292)
Total other comprehensive loss	(2,930)	(2,582)
Comprehensive loss	$ (9,881)	$ (25,200)