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Stockholders' Equity - Additional Information (Detail) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Mar. 31, 2015 | May. 31, 2014
Stockholders Equity Note [Line Items] |  |  |  |  |
Amount remaining authorized to repurchase shares |  | $ 100,000,000 |  |  |
Number of Shares Repurchased | 2,841,976 | 0 | 2,841,976 |  |
Shares repurchased, value | $ 99,999,000 |  | $ 99,999,000 | $ 99,999,000 |
Maximum |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |
Amount authorized to repurchase shares |  |  |  |  | $ 200,000,000

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