Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net Income	$ 219	$ 136	$ 36,148	$ 18,939
Other comprehensive income (loss), net of tax
Cash flow hedge adjustments, net of taxes of $(372) and $82 for the three and months ended September 30, 2018 and 2017, respectively and $(376) and $(603) for the nine months ended September 30, 2018 and 2017, respectively	1,178	(134)	1,192	985
Foreign currency translation adjustment, net of taxes of $0 for the three months ended September 30, 2018 and 2017 and $0 and $56 for the nine months ended September 30, 2018 and 2017, respectively	(5,415)	5,833	(7,705)	16,747
Other Adjustments, Net of Taxes of $0 for all periods	6	(90)		(238)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent			11
Other comprehensive (loss) income, net of taxes	(4,231)	5,609	(6,502)	17,494
Comprehensive (Loss) Income	(4,012)	5,745	29,646	36,433
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	(372)	82	(376)	(603)
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	0	0	0	(56)
Other Comprehensive (Income) Loss, Other Adjustments, Tax	$ 0	$ 0	$ 0	$ 0