Income Taxes Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Operating Loss Carryforwards [Line Items]
Current Income Tax Expense (Benefit)			$ 5,120,000
Unrecognized tax benefits, period increase (decrease)			9,337,000	3,405,000
Other Tax Expense (Benefit)			2,620,000
Income tax expense	4,010,000	1,133,000	11,547,000	6,751,000
Document Period End Date			Sep. 30, 2014
UNITED KINGDOM
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, International, Utilized			(290,000)
Operating Loss Carryforwards	$ 42,000,000		$ 42,000,000