Debt Schedule of Long-Term Debt Repayments (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012
Debt Instrument [Line Items]
Repayments of Long-term Debt	$ 22,500		$ 67,502
Secured Debt [Member]
Debt Instrument [Line Items]
Repayments of Long-term Debt	22,500		67,502
Term loan
Debt Instrument [Line Items]
Repayments of Long-term Debt	7,500		7,502
Multicurrency revolving line of credit (1)
Debt Instrument [Line Items]
Repayments of Long-term Debt	$ 15,000	[1]	$ 60,000

[1] We borrowed $15.0 million and $70.0 million under the multicurrency revolving line of credit during the six months ended June 30, 2013 and 2012.