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Commitments and Contingencies - Additional Information (Detail) | Sep. 11, 2012 USD ($) | Feb. 14, 2011 USD ($) | Jan. 01, 2017 USD ($) Claim
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Yvonne Wiederhold [Member] |  |  |
Commitments and Contingencies [Line Items] |  |  |
Amount delivered for plaintiff |  | $ 10,100,000 |
Percentage liable by company for plaintiff |  | 90.00% |
Litigation settlement, amount |  | $ 8,900,000 |
Raghurami Reddy [Member] |  |  |
Commitments and Contingencies [Line Items] |  |  |
Amount delivered for plaintiff | $ 32,000,000 |  |
Percentage liable by company for plaintiff | 60.00% |  |
Maximum [Member] |  |  |
Commitments and Contingencies [Line Items] |  |  |
Estimated litigation loss |  |  | $ 6,900,000
Employment Practice Cases [Member] |  |  |
Commitments and Contingencies [Line Items] |  |  |
Number of pending claims | Claim |  |  | 3
Casualty Cases [Member] |  |  |
Commitments and Contingencies [Line Items] |  |  |
Number of pending claims | Claim |  |  | 2

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