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Income Taxes - Schedule of Effective Income Tax 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, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Benefit computed at the statutory federal tax rate									$ 5,470	$ 5,506
State taxes and other, net									1,564	(204)
Bank owned life insurance									(328)	(90)
ESOP/Share based compensation									0	(509)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount					$ 2,500				0	2,487
Total income tax expense (benefit)	$ 2,803	$ 1,396	$ 1,207	$ 1,300	$ 4,702	$ 594	$ 1,572	$ 322	$ 6,706	$ 7,190
Effective income tax rate									25.74%	44.77%

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

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