Equity-Based Compensation - Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Equity-based compensation expense
Total equity-based compensation expense	$ 6,160	$ 2,668
Income tax effect	(1,674)	(1,035)
After-tax effect of equity-based compensation expense	4,486	1,633
Cost of Sales
Equity-based compensation expense
Total equity-based compensation expense	320	41
Research and Development Expense
Equity-based compensation expense
Total equity-based compensation expense	756	478
Selling, General and Administrative Expenses
Equity-based compensation expense
Total equity-based compensation expense	$ 5,084	$ 2,149