Derivatives and Hedging Activities (Customer Related Derivative Positions - Not Designated as Hedges) (Details) - Not Designated as Hedging Instrument $ in Thousands		Sep. 30, 2023 USD ($) position	Dec. 31, 2022 USD ($) position
Receive fixed, pay variable | Loan level swaps
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	[1]	283	283
Less than 1 year		$ 67,347	$ 80,531
Less than 2 years		248,602	96,613
Less than 3 years		204,413	256,924
Less than 4 years		247,437	193,096
Thereafter		987,554	1,016,312
Derivative, Notional Amount		1,755,353	1,643,476
Fair Value		$ (146,746)	$ (118,930)
Pay fixed, receive variable | Loan level swaps
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	[1]	283	283
Less than 1 year		$ 67,347	$ 80,531
Less than 2 years		248,602	96,613
Less than 3 years		204,413	256,924
Less than 4 years		247,437	193,096
Thereafter		987,554	1,016,312
Derivative, Notional Amount		1,755,353	1,643,476
Fair Value		$ 146,649	$ 118,928
Buys foreign currency, sells U.S. currency | Foreign exchange contracts
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	[1]	22	49
Less than 1 year		$ 54,498	$ 124,982
Less than 2 years		16,089	13,363
Less than 3 years		0	0
Less than 4 years		0	0
Thereafter		0	0
Derivative, Notional Amount		70,587	138,345
Fair Value		$ (335)	$ 306
Buys U.S. currency, sells foreign currency | Foreign exchange contracts
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position	[1]	22	49
Less than 1 year		$ 54,498	$ 124,982
Less than 2 years		16,089	13,363
Less than 3 years		0	0
Less than 4 years		0	0
Thereafter		0	0
Derivative, Notional Amount		70,587	138,345
Fair Value		$ 366	$ (232)
Risk Participated Out | Risk Participation Agreement
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position		17	13
Less than 1 year		$ 0	$ 2,595
Less than 2 years		24,322	0
Less than 3 years		0	24,538
Less than 4 years		3,666	0
Thereafter		123,961	95,514
Derivative, Notional Amount		151,949	122,647
Fair Value		$ 102	$ 161
Risk Participated In | Risk Participation Agreement
Summary of customer related derivative positions, not designated as hedging
Number of Positions | position		7	6
Less than 1 year		$ 10,586	$ 27,365
Less than 2 years			0
Less than 3 years		0	0
Less than 4 years		19,078	0
Thereafter		8,097	25,849
Derivative, Notional Amount		37,761	53,214
Fair Value		$ (4)	$ (15)

[1] The Company may enter into one dealer swap agreement which offsets multiple commercial borrower swap agreements.