Income Taxes - Schedule of Differences in Federal Income Tax Expense and State Tax Expense from Statutory Federal and State Rates (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Federal taxes calculated at statutory rate	$ 5,300	$ 5,305
Increase (decrease) resulting from:
State taxes, net of federal benefit	1,143	610
Benefit of equity based compensation	(736)	(195)
Municipal interest income	(201)	(366)
Bank owned life insurance	(12)	(21)
Other	(12)	92
Total	$ 5,482	$ 5,425
Federal taxes calculated at statutory rate, percentage	21.00%	35.00%
Increase (decrease) resulting from:
State taxes, net of federal benefit, percentage	4.50%	4.00%
Benefit of equity based compensation, percentage	(3.00%)	(1.30%)
Municipal interest income, percentage	(0.80%)	(2.40%)
Bank owned life insurance, percentage	(0.00%)	(0.20%)
Other, percentage	0.00%	0.60%
Income tax expense, as reported, percentage	21.70%	35.70%

Effective income tax rate reconciliation, municipal interest income, percent.

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Income tax reconciliation bank owned life insurance.

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Income tax reconciliation municipal interest income.

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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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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage 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 life insurance expense.

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