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Income Taxes - Schedule of Provision for Income Tax (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013
Current: |  |  |  |  |  |  |  |  |  |  |
Federal income tax |  |  |  |  |  |  |  |  | $ (1,348) | $ 4,035 | $ 2,508
State income tax |  |  |  |  |  |  |  |  | (98) | 543 | 459
Total current |  |  |  |  |  |  |  |  | (1,446) | 4,578 | 2,967
Deferred: |  |  |  |  |  |  |  |  |  |  |
Federal income tax |  |  |  |  |  |  |  |  | 10,432 | 4,666 | 7,921
State income tax |  |  |  |  |  |  |  |  | 1,919 | 645 | 1,141
Total deferred |  |  |  |  |  |  |  |  | 12,351 | 5,311 | 9,062
Total provision for income taxes | $ (35) | $ 6,227 | $ 950 | $ 3,763 | $ 6,653 | $ 791 | $ 2,992 | $ (547) | $ 10,905 | $ 9,889 | $ 12,029

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