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Fair Value Measurement and Fair Value of Financial Instruments (Financial Assets and Liabilities Measurement on Recurring Basis) (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Investment securities available-for-sale |  |
Equity securities |  | $ 31,900
Derivative |  |
Derivative assets | $ 59,831 | 66,146
Derivative liabilities | 86,673 | 74,935
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 651,830 | 661,015
Equity securities | 20,489 |
Total investments in tax credit and other investments | 20,489 |
Derivative |  |
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate swaps and options |  |
Derivative |  |
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign exchange spot and forwards |  |
Derivative |  |
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | RPAs |  |
Derivative |  |
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity warrants |  |
Derivative |  |
Derivative assets | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Commodity options |  |
Derivative |  |
Derivative assets | 0 |
Derivative liabilities | 0 |
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate swaps |  |
Derivative |  |
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign exchange forwards |  |
Derivative |  |
Derivative liabilities | 0 |
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 651,830 | 640,280
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government agency and U.S. government sponsored enterprise debt securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Non-agency residential mortgage-backed securities | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign bonds | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities |  | 20,735
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 2,159,586 | 2,355,737
Equity securities | 10,498 |
Total investments in tax credit and other investments | 10,498 |
Derivative |  |
Derivative assets | 58,900 | 65,467
Derivative liabilities | 86,673 | 74,935
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swaps and options |  |
Derivative |  |
Derivative assets | 51,933 | 58,633
Derivative liabilities | 72,893 | 57,958
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign exchange spot and forwards |  |
Derivative |  |
Derivative assets | 6,087 | 5,840
Derivative liabilities | 4,066 | 10,170
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | RPAs |  |
Derivative |  |
Derivative assets | 1 | 1
Derivative liabilities | 21 | 8
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Equity warrants |  |
Derivative |  |
Derivative assets | 582 | 993
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Commodity options |  |
Derivative |  |
Derivative assets | 297 |
Derivative liabilities | 288 |
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swaps |  |
Derivative |  |
Derivative liabilities | 8,251 | 6,799
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign exchange forwards |  |
Derivative |  |
Derivative liabilities | 1,154 |
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. Treasury securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. government agency and U.S. government sponsored enterprise debt securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 233,016 | 203,392
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 339,834 | 318,957
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 989,453 | 1,190,271
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Municipal securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 74,076 | 99,982
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Non-agency residential mortgage-backed securities | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 8,404 | 9,117
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 35,858 | 37,003
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign bonds | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 478,945 | 486,408
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities |  | 10,607
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Equity securities | 0 |
Total investments in tax credit and other investments | 0 |
Derivative |  |
Derivative assets | 931 | 679
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Interest rate swaps and options |  |
Derivative |  |
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Foreign exchange spot and forwards |  |
Derivative |  |
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | RPAs |  |
Derivative |  |
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Equity warrants |  |
Derivative |  |
Derivative assets | 931 | 679
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Commodity options |  |
Derivative |  |
Derivative assets | 0 |
Derivative liabilities | 0 |
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Interest rate swaps |  |
Derivative |  |
Derivative liabilities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Foreign exchange forwards |  |
Derivative |  |
Derivative liabilities | 0 |
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | U.S. Treasury securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | U.S. government agency and U.S. government sponsored enterprise debt securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Municipal securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Non-agency residential mortgage-backed securities | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Corporate debt securities | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Foreign bonds | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 0 | 0
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Other securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities |  | 0
Fair Value, Measurements, Recurring | Fair Value Measurements |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 2,811,416 | 3,016,752
Equity securities | 30,987 |
Total investments in tax credit and other investments | 30,987 |
Derivative |  |
Derivative assets | 59,831 | 66,146
Derivative liabilities | 86,673 | 74,935
Fair Value, Measurements, Recurring | Fair Value Measurements | Interest rate swaps and options |  |
Derivative |  |
Derivative assets | 51,933 | 58,633
Derivative liabilities | 72,893 | 57,958
Fair Value, Measurements, Recurring | Fair Value Measurements | Foreign exchange spot and forwards |  |
Derivative |  |
Derivative assets | 6,087 | 5,840
Derivative liabilities | 4,066 | 10,170
Fair Value, Measurements, Recurring | Fair Value Measurements | RPAs |  |
Derivative |  |
Derivative assets | 1 | 1
Derivative liabilities | 21 | 8
Fair Value, Measurements, Recurring | Fair Value Measurements | Equity warrants |  |
Derivative |  |
Derivative assets | 1,513 | 1,672
Fair Value, Measurements, Recurring | Fair Value Measurements | Commodity options |  |
Derivative |  |
Derivative assets | 297 |
Derivative liabilities | 288 |
Fair Value, Measurements, Recurring | Fair Value Measurements | Interest rate swaps |  |
Derivative |  |
Derivative liabilities | 8,251 | 6,799
Fair Value, Measurements, Recurring | Fair Value Measurements | Foreign exchange forwards |  |
Derivative |  |
Derivative liabilities | 1,154 |
Fair Value, Measurements, Recurring | Fair Value Measurements | U.S. Treasury securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 651,830 | 640,280
Fair Value, Measurements, Recurring | Fair Value Measurements | U.S. government agency and U.S. government sponsored enterprise debt securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 233,016 | 203,392
Fair Value, Measurements, Recurring | Fair Value Measurements | U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 339,834 | 318,957
Fair Value, Measurements, Recurring | Fair Value Measurements | U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 989,453 | 1,190,271
Fair Value, Measurements, Recurring | Fair Value Measurements | Municipal securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 74,076 | 99,982
Fair Value, Measurements, Recurring | Fair Value Measurements | Non-agency residential mortgage-backed securities | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 8,404 | 9,117
Fair Value, Measurements, Recurring | Fair Value Measurements | Corporate debt securities | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 35,858 | 37,003
Fair Value, Measurements, Recurring | Fair Value Measurements | Foreign bonds | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | $ 478,945 | 486,408
Fair Value, Measurements, Recurring | Fair Value Measurements | Other securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities |  | $ 31,342

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