Accumulated Other Comprehensive Income (Loss) (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2016		Sep. 30, 2015		Sep. 30, 2016		Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance					$ (136,057)		$ (79,248)
Foreign currency translation adjustment	$ (763)		$ (3,086)		(3,767)		(39,792)
Other comprehensive (loss) before reclassifications					(5,692)		(40,387)
Amounts reclassified from accumulated other comprehensive loss					478		2,493
Net current-period other comprehensive (loss) income, before income taxes	133		(2,558)		(5,214)		(37,894)
Income tax expense	(1,363)		(4,532)		(11,574)		(868)
Net current-period other comprehensive (loss) income, net of income taxes					(16,788)		(38,762)
Ending balance	(152,845)		(118,010)		(152,845)		(118,010)
Cash Flow Hedging [Member] | Interest Expense [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	146	[1]	654	[1]	478	[2]	2,493	[2]
Cash Flow Hedging [Member] | Interest Rate Swap [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	750		(126)		(1,925)		(595)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance					(136,434)		(77,492)
Amounts reclassified from accumulated other comprehensive loss					0		0
Net current-period other comprehensive (loss) income, before income taxes					(3,767)		(39,792)
Income tax expense					(12,106)		(174)
Net current-period other comprehensive (loss) income, net of income taxes					(15,873)		(39,966)
Ending balance	(152,307)		(117,458)		(152,307)		(117,458)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance					377		(1,756)
Net current-period other comprehensive (loss) income, before income taxes					(1,447)		1,898
Income tax expense					532		(694)
Net current-period other comprehensive (loss) income, net of income taxes					(915)		1,204
Ending balance	$ (538)		$ (552)		$ (538)		$ (552)

[1] There were no gains or losses recognized in earnings related to any ineffective portion of hedging relationships or related to any amount excluded from the assessment of hedge effectiveness for the three months ended September 30, 2016 and 2015.

[2] There were no gains or losses recognized in earnings related to any ineffective portion of hedging relationships or related to any amount excluded from the assessment of hedge effectiveness for the nine months ended September 30, 2016 and 2015.