Derivatives and Hedging Activities (Offset Fair Value and Notional Amount) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Offsetting Derivative Assets [Abstract]
Total gross derivative amounts recognized on the balance sheet	$ 117,452	$ 105,164
Gross amounts offset on the balance sheet	0	0
Net derivative amounts presented on the balance sheet	117,452	105,164
Financial instruments - institutional counterparties	0	0
Cash collateral - institutional counterparties	116,220	101,328
Net derivatives not offset	1,232	3,836
Liability Derivatives
Notional Amount	375,000	455,000
Total gross derivative amounts recognized on the balance sheet	103,314	90,834
Gross amounts offset on the balance sheet	0	0
Net derivative amounts presented on the balance sheet	103,314	90,834
Financial instruments - institutional counterparties	0	0
Cash Collateral	0	0
Net derivatives not offset	103,314	90,834
Derivatives Not Designated as a Hedging Instruments
Offsetting Derivative Assets [Abstract]
Total gross derivative amounts recognized on the balance sheet	103,215	89,278
Liability Derivatives
Notional Amount		89,469
Total gross derivative amounts recognized on the balance sheet	103,314
Derivatives Not Designated as a Hedging Instruments | Interest rate products
Offsetting Derivative Assets [Abstract]
Notional Amount	1,117,124	1,152,200
Liability Derivatives
Notional Amount	1,117,124	1,152,200
Derivatives Not Designated as a Hedging Instruments | Credit contracts
Offsetting Derivative Assets [Abstract]
Notional Amount	46,151	46,359
Net derivative amounts presented on the balance sheet	9	17
Liability Derivatives
Notional Amount	142,260	96,462
Net derivative amounts presented on the balance sheet	5	8
Cash Collateral	70
Designated as Hedging Instrument | Interest rate products
Offsetting Derivative Assets [Abstract]
Notional Amount	375,000	330,000
Liability Derivatives
Notional Amount	0	125,000
Other assets | Derivatives Not Designated as a Hedging Instruments | Interest rate products
Offsetting Derivative Assets [Abstract]
Total gross derivative amounts recognized on the balance sheet	103,206	89,261
Other assets | Derivatives Not Designated as a Hedging Instruments | Credit contracts
Offsetting Derivative Assets [Abstract]
Total gross derivative amounts recognized on the balance sheet	9	17
Other assets | Designated as Hedging Instrument | Interest rate products
Offsetting Derivative Assets [Abstract]
Total gross derivative amounts recognized on the balance sheet	14,237	15,886
Other liabilities | Derivatives Not Designated as a Hedging Instruments | Interest rate products
Liability Derivatives
Notional Amount		89,461
Total gross derivative amounts recognized on the balance sheet	103,309
Other liabilities | Derivatives Not Designated as a Hedging Instruments | Credit contracts
Liability Derivatives
Notional Amount		8
Total gross derivative amounts recognized on the balance sheet	5
Other liabilities | Designated as Hedging Instrument | Interest rate products
Liability Derivatives
Notional Amount		$ 1,365
Total gross derivative amounts recognized on the balance sheet	$ 0