Income Taxes (Details 3) (USD $)	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 04, 2014
Income Taxes
Income tax provision (benefit) at U.S. statutory rates		$ (27,424,000)	$ (24,923,000)	$ 13,366,000
State taxes, net of U.S. federal impact		(662,000)	(1,554,000)	(89,000)
Effect of international operations		(6,160,000)	(4,275,000)	(2,387,000)
Domestic production activities deduction			1,554,000	(489,000)
Research and development tax credit		(1,935,000)	(3,151,000)	(3,013,000)
Net change in valuation allowance		27,156,000	2,420,000	2,943,000
Change in accrual for unrecognized tax benefits		(1,940,000)	577,000	533,000
Goodwill impairment		9,786,000
Change in contingent consideration		(10,279,000)	290,000
Other		44,000	115,000	793,000
Total provision (benefit) for income taxes		(11,414,000)	(28,947,000)	11,657,000
Reversal of additional tax of foreign jurisdiction	4,900,000
Excess tax benefits from stock option exercises not recorded		600,000	500,000
Excess tax benefits from stock option exercises				2,100,000
PSP
Income taxes
Deferred tax liability related to acquisition					$ 2,700,000