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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, 2019 USD ($) position | Dec. 31, 2018 USD ($) 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 | 299 | 235
Less than 1 year | $ 156,690 | $ 50,702
Less than 2 years | 125,203 | 124,222
Less than 3 years | 85,603 | 97,904
Less than 4 years | 165,599 | 47,308
Thereafter | 1,044,315 | 631,471
Derivative, Notional Amount | 1,577,410 | 951,607
Fair Value | $ 48,596 | $ (2,907)
Pay fixed, receive variable | Loan level swaps |  |
Summary of customer related derivative positions, not designated as hedging |  |
Number of Positions (1) | position | 290 | 220
Less than 1 year | $ 156,690 | $ 50,702
Less than 2 years | 125,203 | 124,222
Less than 3 years | 85,603 | 97,904
Less than 4 years | 165,599 | 47,308
Thereafter | 1,044,315 | 631,471
Derivative, Notional Amount | 1,577,410 | 951,607
Fair Value | $ (48,591) | $ 2,903
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 | 40 | 27
Less than 1 year | $ 91,434 | $ 60,297
Less than 2 years |  | 3,505
Derivative, Notional Amount | 91,434 | 63,802
Fair Value | $ (81) | $ (1,404)
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 | 40 | 27
Less than 1 year | $ 91,434 | $ 60,297
Less than 2 years |  | 3,505
Derivative, Notional Amount | 91,434 | 63,802
Fair Value | $ 123 | $ 1,434

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