Debt Schedule of Long-Term Debt Repayments (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Debt Instrument [Line Items]
Repayments of Long-term Debt	$ 51,250	$ 22,500
Secured Debt [Member]
Debt Instrument [Line Items]
Repayments of Long-term Debt	51,250	22,500
Term loan
Debt Instrument [Line Items]
Repayments of Long-term Debt	11,250	7,500
Multicurrency revolving line of credit
Debt Instrument [Line Items]
Repayments of Long-term Debt	$ 40,000	$ 15,000