Equity-Based Compensation - Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Equity-based compensation expense
Total equity-based compensation expense	$ 5,178	$ 4,016	$ 11,341	$ 6,684
Income tax effect	(1,394)	(1,558)	(3,068)	(2,593)
After-tax effect of equity-based compensation expense	3,784	2,458	8,273	4,091
Cost of Sales
Equity-based compensation expense
Total equity-based compensation expense	(44)	54	277	95
Research and Development Expense
Equity-based compensation expense
Total equity-based compensation expense	968	565	1,725	1,043
Selling, General and Administrative Expenses
Equity-based compensation expense
Total equity-based compensation expense	$ 4,254	$ 3,397	$ 9,339	$ 5,546