Income Taxes (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income (loss) before income taxes	$ (15,664,000)	$ 18,791,000
Income tax expense (benefit)	3,446,000	(369,000)
Contingent consideration		29,400,000
Domestic
Income tax expense (benefit)	2,000,000
Foreign
Income tax expense (benefit)	$ 1,400,000