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Derivatives and Hedging Activities (Customer Related Derivative Positions - Not Designated as Hedges) (Details) - Not Designated as Hedging Instrument [Member] $ in Thousands | Dec. 31, 2021 USD ($) position | Dec. 31, 2020 USD ($) position
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Receive fixed, pay variable | Loan level swaps |  |  |  |
Summary of customer related derivative positions, not designated as hedging |  |  |  |
Number of Positions (1) | position | [1] | 296 |  | 322
Less than 1 year |  | $ 37,589 |  | $ 102,999
Less than 2 years |  | 139,844 |  | 76,487
Less than 3 years |  | 123,507 |  | 149,265
Less than 4 years |  | 260,953 |  | 147,422
Thereafter |  | 1,060,276 |  | 1,222,557
Derivative, Notional Amount |  | 1,622,169 |  | 1,698,730
Fair Value |  | $ 55,984 |  | $ 127,226
Pay fixed, receive variable | Loan level swaps |  |  |  |
Summary of customer related derivative positions, not designated as hedging |  |  |  |
Number of Positions (1) | position | [1] | 296 |  | 313
Less than 1 year |  | $ 37,589 |  | $ 102,999
Less than 2 years |  | 139,844 |  | 76,487
Less than 3 years |  | 123,507 |  | 149,265
Less than 4 years |  | 260,953 |  | 147,422
Thereafter |  | 1,060,276 |  | 1,222,557
Derivative, Notional Amount |  | 1,622,169 |  | 1,698,730
Fair Value |  | $ (55,982) |  | $ (127,216)
Buys foreign currency, sells U.S. currency | Foreign exchange contracts |  |  |  |
Summary of customer related derivative positions, not designated as hedging |  |  |  |
Number of Positions (1) | position | [1] | 52 |  | 33
Less than 1 year |  | $ 149,588 |  | $ 87,557
Less than 2 years |  | 8,784 |  | 5,300
Derivative, Notional Amount |  | 158,372 |  | 92,857
Fair Value |  | $ 5,734 |  | $ (4,214)
Buys U.S. currency, sells foreign currency | Foreign exchange contracts |  |  |  |
Summary of customer related derivative positions, not designated as hedging |  |  |  |
Number of Positions (1) | position | [1] | 52 |  | 33
Less than 1 year |  | $ 149,588 |  | $ 87,557
Less than 2 years |  | 8,784 |  | 5,300
Derivative, Notional Amount |  | 158,372 |  | 92,857
Fair Value |  | $ (5,734) |  | $ 4,224
Risk Participated Out [Member] | Risk Participation Agreement [Member] |  |  |  |
Summary of customer related derivative positions, not designated as hedging |  |  |  |
Number of Positions (1) | position |  | 11 | [1] | 12
Less than 1 year |  |  |  | $ 6,721
Less than 2 years |  | $ 2,635 |  |
Less than 3 years |  | 7,138 |  | 2,675
Less than 4 years |  | 24,539 |  | 7,307
Thereafter |  | 68,408 |  | 93,378
Derivative, Notional Amount |  | 102,720 |  | 110,081
Fair Value |  | $ 279 |  | $ 512
Risk Participated In [Member] | Risk Participation Agreement [Member] |  |  |  |
Summary of customer related derivative positions, not designated as hedging |  |  |  |
Number of Positions (1) | position |  | 7 | [1] | 8
Less than 1 year |  | $ 29,972 |  |
Less than 2 years |  | 28,235 |  | $ 30,649
Less than 3 years |  |  |  | 29,072
Thereafter |  | 8,339 |  | 15,844
Derivative, Notional Amount |  | 66,546 |  | 75,565
Fair Value |  | $ (55) |  | $ (118)
[1] | The Company may enter into one dealer swap agreement which offsets multiple commercial borrower swap agreements

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