Effective Income Tax Rate Reconciliation, Bank Owned Life Insurance Earnings, Amount

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Effective Income Tax Rate Reconciliation, Deduction, Share-based Compensation, Amount

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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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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 tax credits. Including, but not limited to, research credit, foreign tax credit, investment tax credit, and other tax credits.

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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 Tax - Reconciliation of Federal Statutory to Actual Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Federal Statutory to Actual Tax Expense:
Federal Statutory Income Tax at 21% for 2019 and 2018 and 35% for 2017									$ 40,695	$ 39,509	$ 46,758
Tax-exempt Interest Income									(10,124)	(8,347)	(11,127)
Stock Compensation									(459)	(622)	(893)
Earnings on Life Insurance									(953)	(868)	(2,302)
Tax Credits									(263)	(615)	(811)
Tax Cuts and Jobs Act - Rate Reform Impact									0	0	5,120
Other									429	(58)	779
Income Tax Expense	$ 8,298	$ 6,337	$ 7,749	$ 6,941	$ 5,949	$ 8,478	$ 7,961	$ 6,611	$ 29,325	$ 28,999	$ 37,524
Effective Tax Rate									15.10%	15.40%	28.10%