Derivative Financial Instruments - Notional Amounts and Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Asset Derivatives
Notional Amount	$ 139,907	$ 56,256
Fair Value	2,064	910
Derivative Liability [Abstract]
Notional Amount	829,784	840,646
Derivative, fair value	(80,850)	(37,939)
Interest Rate Lock Commitments
Derivative Liability [Abstract]
Derivative, fair value	2,064	910
Derivatives designated as hedging instruments \| Interest rate swaps
Derivative Liability [Abstract]
Notional Amount	513,034	515,646
Derivatives not designated as hedging instruments \| Interest Rate Lock Commitments
Asset Derivatives
Notional Amount	139,907	56,256
Fair Value	2,064	910
Derivatives not designated as hedging instruments \| Forward contracts
Derivative Liability [Abstract]
Notional Amount	106,750	115,000
Fair Value	(2,298)	(153)
Loans \| Derivatives designated as hedging instruments \| Interest rate swaps
Asset Derivatives
Notional Amount	0	0
Fair Value	0	0
Derivative Liability [Abstract]
Notional Amount	424,834	427,446
Loans \| Derivatives designated as hedging instruments \| Forward contracts
Derivative Liability [Abstract]
Notional Amount	424,834	427,446
Fair Value	(44,872)	(21,551)
Securities available-for-sale \| Derivatives designated as hedging instruments \| Interest rate swaps
Asset Derivatives
Notional Amount	0	0
Fair Value	0	0
Derivative Liability [Abstract]
Notional Amount	88,200	88,200
Securities available-for-sale \| Derivatives designated as hedging instruments \| Forward contracts
Derivative Liability [Abstract]
Notional Amount	88,200	88,200
Fair Value	(6,793)	(2,806)
Liability \| Derivatives designated as hedging instruments \| Forward contracts
Derivative Liability [Abstract]
Notional Amount	210,000	210,000
Fair Value	$ (26,887)	$ (13,429)

Nominal or face amount used to calculate payments on the derivative asset.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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Nominal or face amount used to calculate payments on the derivative liability.

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Nominal or face amount used to calculate payment on derivative.

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