Acquisitions - Preliminary Fair Values of the Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Oct. 21, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Goodwill	$ 340,338		$ 252,520	$ 260,134
Latchways
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 acquired		10,600
Trade name and acquired technology | Latchways
Business Acquisition [Line Items]
Intangible Assets		14,600
Customer-related intangibles | Latchways
Business Acquisition [Line Items]
Intangible Assets		$ 53,000