Derivative Instruments - Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Designated as hedging instruments:
Derivative financial instruments
Derivative assets:	$ 468	$ 0
Derivative liabilities:	9,004	5,021
Not designated as hedging instruments:
Derivative financial instruments
Derivative assets:	39,810	8,498
Derivative liabilities:	14,077	4,979
Other Assets | Designated as hedging instruments: | Interest rate swaps
Derivative financial instruments
Derivative assets:	468	0
Other Assets | Not designated as hedging instruments: | Interest rate contracts
Derivative financial instruments
Derivative assets:	11,566	3,880
Other Assets | Not designated as hedging instruments: | Interest rate lock commitments
Derivative financial instruments
Derivative assets:	28,185	4,579
Other Assets | Not designated as hedging instruments: | Forward commitments
Derivative financial instruments
Derivative assets:	59	39
Other Liabilities | Designated as hedging instruments: | Interest rate swaps
Derivative financial instruments
Derivative liabilities:	9,004	5,021
Other Liabilities | Not designated as hedging instruments: | Interest rate contracts
Derivative financial instruments
Derivative liabilities:	11,566	3,880
Other Liabilities | Not designated as hedging instruments: | Interest rate lock commitments
Derivative financial instruments
Derivative liabilities:	0	3
Other Liabilities | Not designated as hedging instruments: | Forward commitments
Derivative financial instruments
Derivative liabilities:	$ 2,511	$ 1,096