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Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands | Jun. 10, 2016 | Sep. 30, 2016 | Feb. 29, 2016
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Equity, Class of Treasury Stock [Line Items] |  |  |
Treasury stock acquired, shares | 1,546 | 1,546 |
Treasury stock acquired, average cost per share | $ 16.17 |  |
Maximum [Member] | Common Stock [Member] |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Stock repurchase program, authorized amount |  |  | $ 25,000,000

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