Derivatives and Hedging Activities (Offset Fair Value and Notional Amount) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Offsetting Derivative Assets [Abstract]
Asset Derivatives	$ 112,902	$ 151,192
Gross amounts offset on the balance sheet	0	0
Net derivative amounts presented on the balance sheet	112,902	151,192
Financial instruments - institutional counterparties	0	0
Cash collateral - institutional counterparties	112,870	149,800
Net derivatives not offset	32	1,392
Offsetting Derivative Liabilities [Abstract]
Notional Amount	355,000
Liability Derivatives	89,488	122,390
Gross amounts offset on the balance sheet	0	0
Net derivative amounts presented on the balance sheet	89,488	122,390
Financial instruments - institutional counterparties	0	0
Cash collateral - institutional counterparties	0	0
Net derivatives not offset	89,488	122,390
Derivatives Not Designated as a Hedging Instruments
Offsetting Derivative Assets [Abstract]
Fair Value	89,100	122,073
Offsetting Derivative Liabilities [Abstract]
Fair Value	89,488	122,390
Derivatives Not Designated as a Hedging Instruments | Credit contracts
Offsetting Derivative Liabilities [Abstract]
Cash collateral - institutional counterparties	70
Derivatives Not Designated as a Hedging Instruments | Other assets | Interest rate products
Offsetting Derivative Assets [Abstract]
Notional Amount	1,140,601	1,198,191
Fair Value	89,068	122,047
Derivatives Not Designated as a Hedging Instruments | Other assets | Credit contracts
Offsetting Derivative Assets [Abstract]
Notional Amount	46,970	47,143
Fair Value	32	26
Derivatives Not Designated as a Hedging Instruments | Other liabilities | Interest rate products
Offsetting Derivative Liabilities [Abstract]
Notional Amount	1,140,601	1,198,191
Fair Value	89,473	122,378
Derivatives Not Designated as a Hedging Instruments | Other liabilities | Credit contracts
Offsetting Derivative Liabilities [Abstract]
Notional Amount	96,436	110,714
Fair Value	15	12
Designated as Hedging Instrument | Other assets | Interest rate products
Offsetting Derivative Assets [Abstract]
Notional Amount	355,000	460,000
Fair Value	23,802	29,119
Designated as Hedging Instrument | Other liabilities | Interest rate products
Offsetting Derivative Liabilities [Abstract]
Notional Amount		0
Fair Value	$ 0	$ 0