Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net income	$ (37,060)	$ 16,606	$ 18,803	$ 34,766
Other comprehensive (loss) income, net of tax
Cash flow hedge adjustments, net of taxes of $(685) for each of the three and six months ended June 30, 2017	1,119	0	1,119	0
Foreign currency translation adjustment, net of taxes of $8 and $(746) for the three months ended June 30, 2017 and 2016, respectively, and $56 and $413 for the six months ended June 30, 2017 and 2016, respectively	8,888	(2,267)	10,914	1,832
Other Adjustments, Net of Taxes of $0 for all periods	(151)	0	(148)	0
Other comprehensive income (loss), net of taxes	9,856	(2,267)	11,885	1,832
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(27,204)	14,339	30,688	36,598
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	(685)	0	(685)	0
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	8	(746)	56	(413)
Other Comprehensive (Income) Loss, Other Adjustments, Tax	$ 0	$ 0	$ 0	$ 0