Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Provision for Income Tax (Details)

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Income Taxes - Schedule of Provision for Income Tax (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2016
Current:                      
Federal income tax                 $ 1,961 $ 102 $ 244
State income tax                 384 0 0
Total current                 2,345 102 244
Deferred:                      
Federal income tax                 (3,917) (3,286) 4,538
State income tax                 1,962 (662) 739
Total deferred                 (1,955) (3,948) 5,277
Provision (benefit) for income taxes $ (284) $ 4,941 $ 8,150 $ (12,417) $ (10,559) $ 3,665 $ 4,321 $ (1,273) $ 390 $ (3,846) $ 5,521