Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Income Tax Contingency [Line Items]
Effective tax rate			27.90%	40.60%	32.80%
Income taxes	$ 13,407	$ 4,008	$ 33,782	$ 31,426
2013 U.S Court Decision [Member]
Income Tax Contingency [Line Items]
Effective tax rate					17.50%
Income taxes					$ 16,428