Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Income Tax Provision Attributable to Income from Continuing Operations (Details)

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Income Taxes - Schedule of Income Tax Provision Attributable to Income from Continuing Operations (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2017
Income Tax Disclosure [Abstract]                      
Statutory federal income tax rate                 21.00% 24.53% 35.00%
Income tax (benefit) at the statutory federal rate                 $ 10,587 $ 3,198 $ (4,670)
Increase (decrease) resulting from:                      
State income taxes, net of federal benefit                 1,947 857 (402)
Permanent and other reconciling items, net                 166 221 548
Expiration of capital loss carryforward                 0 5,634 581
Reduction in deferred tax liability resulting from the Act                 0 (9,847) 0
Stock option cancellation                 0 347 0
Other                 83 (20) 97
Income taxes provision (benefit) $ 5,701 $ 5,483 $ 2,228 $ (629) $ (284) $ 4,941 $ 8,150 $ (12,417) $ 12,783 $ 390 $ (3,846)