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Income Taxes - Schedule of Provision for Income Tax (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2014
Current: |  |  |  |  |  |  |  |  |  |  |
Federal income tax |  |  |  |  |  |  |  |  | $ 244 | $ (1,348) | $ 4,035
State income tax |  |  |  |  |  |  |  |  | 0 | (98) | 543
Total current |  |  |  |  |  |  |  |  | 244 | (1,446) | 4,578
Deferred: |  |  |  |  |  |  |  |  |  |  |
Federal income tax |  |  |  |  |  |  |  |  | 4,538 | 10,432 | 6,160
State income tax |  |  |  |  |  |  |  |  | 739 | 1,919 | 645
Total deferred |  |  |  |  |  |  |  |  | 5,277 | 12,351 | 6,805
Total provision for income taxes | $ (1,898) | $ 3,392 | $ 6,102 | $ (2,075) | $ (629) | $ 6,644 | $ 1,127 | $ 3,763 | $ 5,521 | $ 10,905 | $ 11,383

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