Derivatives - Balance Sheet Location (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Other Current Assets
Derivatives, Fair Value [Line Items]
Assets	$ 520	$ 789
Other Current Assets | Foreign exchange forward | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets	373	414
Other Current Assets | Foreign exchange forward | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets	147	375
Other Current Assets | Interest rate swap | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Assets	0	0
Accrued Expenses
Derivatives, Fair Value [Line Items]
Liabilities	2,526	1,212
Accrued Expenses | Foreign exchange forward | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities	921	1,195
Accrued Expenses | Foreign exchange forward | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities	1,605	5
Accrued Expenses | Interest rate swap | Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Liabilities	$ 0	$ 12