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Basis of Presentation and Significant Accounting Policies - Foreign Currency Translation (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accumulated translation gains	$ 1,700,000	$ 13,800,000
Foreign currency exchange gains (losses)	$ (1,974,000)	$ (2,222,000)	$ 681,000

Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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