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Derivative Financial Instruments - Effect Of Derivatives on Income (Details) - Interest rate swaps - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Loss Recognized in Other Comprehensive Income	$ 1,439	$ 1,514	$ 7,665	$ (12,453)
Loans
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on the condensed consolidated statements of income	0		0
Gain (loss) recognized on the condensed consolidated statements of income		0		(2,445)
Securities - taxable
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on the condensed consolidated statements of income	0		(253)
Gain (loss) recognized on the condensed consolidated statements of income		(229)		(479)
Securities - non-taxable
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on the condensed consolidated statements of income	(280)		(817)
Gain (loss) recognized on the condensed consolidated statements of income		(242)		(472)
Total interest income
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on the condensed consolidated statements of income	(280)		(1,070)
Gain (loss) recognized on the condensed consolidated statements of income		(471)		(3,396)
Deposits
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on the condensed consolidated statements of income	702		2,072
Gain (loss) recognized on the condensed consolidated statements of income		685		1,585
Other borrowed funds
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on the condensed consolidated statements of income	774		2,258
Gain (loss) recognized on the condensed consolidated statements of income		721		1,632
Total interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on the condensed consolidated statements of income	1,476		4,330
Gain (loss) recognized on the condensed consolidated statements of income		1,406		3,217
Net interest income
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized on the condensed consolidated statements of income	$ (1,756)		$ (5,400)
Gain (loss) recognized on the condensed consolidated statements of income		$ (1,877)		$ (6,613)

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The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

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Amount, before reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount, before adjustments, of tax expense (benefit) for gain (loss) from increase (decrease) in value of excluded component of derivative designated and qualifying as hedge. Adjustments include, but are not limited to, reclassifications for sale and settlement, and amounts recognized under systematic and rational method.

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