Acquisitions - Preliminary Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Oct. 21, 2015
Business Acquisition [Line Items]
Goodwill	$ 332,139	$ 340,338
Latchways Acquisition
Business Acquisition [Line Items]
Current assets (including cash of $10.6 million)			$ 35,700
Property, plant and equipment			9,500
Goodwill			98,000
Total assets acquired			210,800
Total liabilities assumed			19,900
Net assets acquired			190,900
Cash			10,600
Trade name and acquired technology | Latchways Acquisition
Business Acquisition [Line Items]
Intangible assets			14,600
Customer-related intangibles | Latchways Acquisition
Business Acquisition [Line Items]
Intangible assets			$ 53,000