Derivatives (Notional Amount and Fair Value of Derivative Instruments) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Other Assets
Notional Amount
Derivative asset	$ 208,299	$ 135,478
Fair Value
Derivative asset	15,339	4,974
Other Liabilities
Notional Amount
Derivative liability	197,389	125,502
Fair Value
Derivative liability	15,117	4,717
Customer-initiated derivatives
Fair Value
Derivative asset	13,551	4,684
Derivative liability	13,551	4,684
Customer-initiated derivatives | Designated as Hedging Instrument | Other Assets
Notional Amount
Derivative asset	122,703	103,941
Fair Value
Derivative asset	13,551	4,684
Customer-initiated derivatives | Designated as Hedging Instrument | Other Liabilities
Notional Amount
Derivative liability	122,703	103,941
Fair Value
Derivative liability	13,551	4,684
Forward contracts related to mortgage loans to be delivered for sale | Not Designated as Hedging Instrument | Other Assets
Notional Amount
Derivative asset	2,000	6,018
Fair Value
Derivative asset	5	34
Forward contracts related to mortgage loans to be delivered for sale | Not Designated as Hedging Instrument | Other Liabilities
Notional Amount
Derivative liability	74,686	20,633
Fair Value
Derivative liability	1,566	33
Interest rate lock commitments | Not Designated as Hedging Instrument | Other Assets
Notional Amount
Derivative asset	83,596	25,519
Fair Value
Derivative asset	1,783	256
Interest rate lock commitments | Not Designated as Hedging Instrument | Other Liabilities
Notional Amount
Derivative liability	0	928
Fair Value
Derivative liability	$ 0	$ 0