Derivatives - Schedule of Derivative Gain (Loss) (Details) - Not Designated as Hedging Instrument - Mortgage banking income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivatives not designated as hedging	$ (42)	$ (934)	$ (1,153)	$ (621)
Retail interest rate contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivatives not designated as hedging	(1,823)	(242)	(6,525)	(934)
Interest rate lock commitments
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivatives not designated as hedging	$ 1,781	$ (692)	$ 5,372	$ 313