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Income Taxes - Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	21.00%	21.00%	35.00%
State income taxes, net of federal benefit	2.50%	2.40%	0.70%
Tax exempt income	(1.50%)	(1.50%)	(2.60%)
Excess benefits from equity-based compensation	(0.80%)	(0.60%)	(1.60%)
Bank-owned life insurance income	(0.50%)	(0.40%)	(0.80%)
Federal tax credit	(0.70%)	(0.60%)	(2.00%)
Enactment of Federal tax reform	0.000	0.000	0.157
All other	0.50%	0.60%	0.40%
Total	20.50%	20.90%	44.80%

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Effective Income Tax Rate Reconciliation, Tax Exempt Life Insurance Income, Percent

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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 reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to Tax Cuts and Jobs Act.

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