Commitments and Contingencies Commitments and Contingencies (Details) In Thousands, unless otherwise specified				24 Months Ended
	Mar. 31, 2014 USD ($)	Mar. 31, 2014 Indirect Tax Liability [Member] USD ($)	Dec. 31, 2013 Indirect Tax Liability [Member] USD ($)	Dec. 31, 2009 Brazilian Federal Indirect Tax Assessment [Member] BRL
Loss Contingencies [Line Items]
Unrecorded Unconditional Purchase Obligation, Due in Next Twelve Months	$ 13,738
Loss Contingency, Damages Sought, Value				270,000
Loss Contingency Accrual, at Carrying Value		26,000	26,000
Loss Contingency, Range of Possible Loss, Portion Not Accrued		$ 395,000