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Compensation Plans - Expense Recognition of Deferred Compensation (Detail) (Restricted Stock Units (RSUs), USD $) | Sep. 30, 2014
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Restricted Stock Units (RSUs) |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
2014 (Remaining Period) | $ 1,476,596
2015 | 4,877,480
2016 | 2,188,337
2017 | 1,671,996
2018 | 939,958
2019 | 299,377
Total | $ 11,453,744

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