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Derivatives and Hedging Activities (Customer Related Derivative Positions - Not Designated as Hedges) (Details) $ in Thousands | Jun. 30, 2017 USD ($) position | Dec. 31, 2016 USD ($) position
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Summary of customer related derivative positions, not designated as hedging |  |
Total | $ 75,000 | $ 75,000
Fair Value | $ 578 | $ 624
Not Designated as Hedging Instrument | Receive fixed, pay variable | Loan level swaps |  |
Summary of customer related derivative positions, not designated as hedging |  |
Number of Positions | position | 235 | 222
Less than 1 year | $ 31,311 | $ 30,245
Less than 2 years | 57,570 | 21,708
Less than 3 years | 71,039 | 63,771
Less than 4 years | 194,784 | 165,783
Thereafter | 560,115 | 567,897
Total | 914,819 | 849,404
Fair Value | $ 12,239 | $ 12,005
Not Designated as Hedging Instrument | Pay fixed, receive variable | Loan level swaps |  |
Summary of customer related derivative positions, not designated as hedging |  |
Number of Positions | position | 220 | 207
Less than 1 year | $ 31,311 | $ 30,245
Less than 2 years | 57,570 | 21,708
Less than 3 years | 71,039 | 63,771
Less than 4 years | 194,784 | 165,783
Thereafter | 560,115 | 567,897
Total | 914,819 | 849,404
Fair Value | $ (12,242) | $ (12,008)
Not Designated as Hedging Instrument | Buys foreign currency, sells U.S. currency | Foreign exchange contracts |  |
Summary of customer related derivative positions, not designated as hedging |  |
Number of Positions | position | 24 | 33
Less than 1 year | $ 43,032 | $ 45,711
Total | 43,032 | 45,711
Fair Value | $ 1,862 | $ (2,250)
Not Designated as Hedging Instrument | Buys U.S. currency, sells foreign currency | Foreign exchange contracts |  |
Summary of customer related derivative positions, not designated as hedging |  |
Number of Positions | position | 24 | 33
Less than 1 year | $ 43,032 | $ 45,711
Total | 43,032 | 45,711
Fair Value | $ (1,845) | $ 2,277

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