Income Taxes - Unrecognized Tax Benefits (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	$ 3,700,000
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, beginning of period	25,135,000	16,041,000	7,156,000
Increases for tax positions taken in current period	1,197,000	0	542,000
Increases for tax positions taken in prior periods	1,701,000	9,965,000	10,502,000
Decreases for tax positions taken in prior periods	(3,997,000)	(620,000)	(1,723,000)
Decreases for lapses in statutes of limitations	(70,000)	(251,000)	(436,000)
Unrecognized tax benefits, end of period	23,966,000	25,135,000	16,041,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued [Abstract]
Benefit for lapses of statutes of limitations and settlement with taxing authorities	(24,000)	(88,000)	(124,000)
Accruals for current and prior periods	1,698,000	652,000	293,000
Total interest and penalties	1,674,000	564,000	169,000
United States [Member]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued [Abstract]
Tax years open for examination, by major tax jurisdiction	2010
The Netherlands [Member]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued [Abstract]
Tax years open for examination, by major tax jurisdiction	2011
Czech Republic [Member]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued [Abstract]
Tax years open for examination, by major tax jurisdiction	2011
Other Noncurrent Liabilities [Member]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, end of period	$ 23,800,000	$ 15,700,000