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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
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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)

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 20 -Section 45 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324 + Details
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