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Acquisitions - Preliminary Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015 | Oct. 21, 2015
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill | $ 339,935 | $ 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

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