Derivatives and Hedging Activities (Offset Fair Value and Notional Amount) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Offsetting Derivative Assets [Abstract]
Asset Derivatives	$ 79,170	$ 66,464
Gross amounts offset on the balance sheet	0	0
Net derivative amounts presented on the balance sheet	79,170	66,464
Financial instruments - institutional counterparties	5,558	18,618
Cash collateral - institutional counterparties	62,840	0
Net derivatives not offset	10,772	47,846
Offsetting Derivative Liabilities [Abstract]
Notional Amount	500,000
Liability Derivatives	60,686	62,472
Gross amounts offset on the balance sheet	0	0
Net derivative amounts presented on the balance sheet	60,686	62,472
Financial instruments - institutional counterparties	5,558	18,618
Cash collateral - institutional counterparties	4,630	26,566
Net derivatives not offset	50,498	17,288
Derivatives Not Designated as a Hedging Instruments
Offsetting Derivative Assets [Abstract]
Fair Value	59,963	59,186
Offsetting Derivative Liabilities [Abstract]
Fair Value	60,626	60,209
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	1,200,002	1,188,703
Fair Value	59,907	59,110
Derivatives Not Designated as a Hedging Instruments | Other assets | Credit contracts
Offsetting Derivative Assets [Abstract]
Notional Amount	33,621	33,683
Fair Value	56	76
Derivatives Not Designated as a Hedging Instruments | Other liabilities | Interest rate products
Offsetting Derivative Liabilities [Abstract]
Notional Amount	1,200,002	1,188,703
Fair Value	60,594	60,163
Derivatives Not Designated as a Hedging Instruments | Other liabilities | Credit contracts
Offsetting Derivative Liabilities [Abstract]
Notional Amount	99,741	97,213
Fair Value	32	46
Designated as Hedging Instrument | Other assets | Interest rate products
Offsetting Derivative Assets [Abstract]
Notional Amount	460,000	250,000
Fair Value	19,207	7,278
Designated as Hedging Instrument | Other liabilities | Interest rate products
Offsetting Derivative Liabilities [Abstract]
Notional Amount	20,000	350,000
Fair Value	$ 60	$ 2,263