Effective Income Tax Rate Reconciliation, Employee Stock Ownership Plan, Fair Market Value Adjustment

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Effective Income Tax Rate Reconciliation, Income From Bank-owned Life Insurance, Amount

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit).

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to income (loss) exempt from income taxes.

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Income Taxes - Schedule of Effective Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended													12 Months Ended
	Dec. 31, 2018	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, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2018	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Tax expense at applicable statutory rate					$ 4,431									$ 7,067	$ 16,478	$ 17,415
Increase (decrease) in taxes resulting from:
State tax, net of federal income tax benefit					535									3,587	822	553
ESOP fair market value adjustment					0									202	0	0
Tax exempt interest income					(2)									(4)	(50)	(28)
Income from Bank-owned life insurance					(381)									(812)	(1,589)	(1,405)
Dividend received deduction					(10)									(16)	(40)	(39)
Impact of tax reform					4,700									0	0	0
Other, net					(290)									899	387	307
Total continuing operations	$ 3,123	$ 6,956	$ (2,961)	$ 3,805	$ 8,983	$ 194	$ 5,934	$ 5,012	$ 4,868	$ 4,611	$ 4,052	$ 4,281	$ 3,859	$ 10,923	$ 16,008	$ 16,803