Business Acquisitions - Total Purchase Price Allocation (Details) - USD ($) $ in Thousands		9 Months Ended
	Jan. 05, 2016	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill		$ 311,420		$ 147,906
Total purchase price, net of cash received		$ 271,458	$ 25,455
Aesynt Holding, L.P., Aesynt, Ltd.
Business Acquisition [Line Items]
Cash	$ 8,164
Accounts receivable	44,084
Inventory	19,690
Other current assets	4,381
Total current assets	76,319
Property and equipment	10,389
Intangible assets	123,700
Goodwill	166,334
Other non-current assets	968
Total assets	377,710
Current liabilities	26,132
Deferred revenue, net	25,598
Non-current deferred tax liabilities	43,927
Other non-current liabilities	2,431
Total liabilities	98,088
Total purchase price	279,622
Total purchase price, net of cash received	$ 271,458