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Earnings Per Share - Summary of Basic and Diluted Earnings Per Share (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended |
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Dec. 31, 2013
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| Earnings Per Share [Abstract] | |
| Net income available to common stockholders | $ 3,154 |
| Weighted average shares outstanding-basic | 28,972,774 |
| Net income per share-basic | $ 0.11 |
| Net income | $ 4,002 |
| Weighted average shares outstanding-diluted | 36,794,215 |
| Net income per share-diluted | $ 0.11 |