Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance, December 31, 2014			$ (6,971)
Other comprehensive income (loss) before reclassification	$ (951)	$ (1,387)	(2,223)	$ (357)
Amounts reclassified from accumulated other comprehensive income (loss)	215	215	646	646
Net current period other comprehensive income (loss)	(736)	$ (1,172)	(1,577)	$ 289
Ending balance, September 30, 2015	(8,548)		(8,548)
Loss on Cash Flow Hedge [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance, December 31, 2014			(4,884)
Other comprehensive income (loss) before reclassification			0
Amounts reclassified from accumulated other comprehensive income (loss)			646
Net current period other comprehensive income (loss)			646
Ending balance, September 30, 2015	(4,238)		(4,238)
Foreign Currency Items [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance, December 31, 2014			(2,087)
Other comprehensive income (loss) before reclassification			(2,223)
Amounts reclassified from accumulated other comprehensive income (loss)			0
Net current period other comprehensive income (loss)			(2,223)
Ending balance, September 30, 2015	(4,310)		(4,310)
Interest Expense [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Interest rate contract	215		646
Income tax benefit (expense) [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Tax (expense) benefit	$ 0		$ 0