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Fair Value Measurement and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Investment securities available-for-sale |  |
Available-for-sale investment securities | $ 2,822,725 | $ 3,335,795
Derivative |  |
Derivative assets | 79,764 | 83,780
Derivative liabilities | (83,400) | (82,323)
U.S. Treasury securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 546,857 | 720,479
U.S. government agency and U.S. government sponsored enterprise debt securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 173,585 | 274,866
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 | 325,144 | 266,799
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 | 1,128,531 | 1,258,747
Municipal securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 105,502 | 147,654
Non-agency residential mortgage-backed securities | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 10,210 | 11,477
Corporate debt securities | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 2,296 | 222,377
Corporate debt securities | Non-investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 9,492 | 9,173
Foreign bonds | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 479,687 | 383,894
Other securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 41,421 | 40,329
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 578,208 | 751,470
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 | 546,857 | 720,479
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 | 31,351 | 30,991
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 2,244,517 | 2,584,325
Derivative |  |
Derivative assets | 79,764 | 83,780
Derivative liabilities | (83,400) | (82,323)
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swaps and options |  |
Derivative |  |
Derivative assets | 64,254 | 67,578
Derivative liabilities | (63,551) | (65,131)
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign exchange contracts |  |
Derivative |  |
Derivative assets | 14,722 | 11,874
Derivative liabilities | (13,161) | (11,213)
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | RPAs |  |
Derivative |  |
Derivative assets | 2 | 3
Derivative liabilities | (2) | (3)
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Warrants |  |
Derivative |  |
Derivative assets | 786 |
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swaps on certificates of deposit |  |
Derivative |  |
Derivative liabilities | (6,686) | (5,976)
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign currency forward contracts |  |
Derivative |  |
Derivative assets |  | 4,325
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 | 173,585 | 274,866
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 | 325,144 | 266,799
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 | 1,128,531 | 1,258,747
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Municipal securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 105,502 | 147,654
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 | 10,210 | 11,477
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 | 2,296 | 222,377
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Corporate debt securities | Non-investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 9,492 | 9,173
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Foreign bonds | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 479,687 | 383,894
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Other securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 10,070 | 9,338
Fair Value, Measurements, Recurring | Estimated Fair Value |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 2,822,725 | 3,335,795
Derivative |  |
Derivative assets | 79,764 | 83,780
Derivative liabilities | (83,400) | (82,323)
Fair Value, Measurements, Recurring | Estimated Fair Value | Interest rate swaps and options |  |
Derivative |  |
Derivative assets | 64,254 | 67,578
Derivative liabilities | (63,551) | (65,131)
Fair Value, Measurements, Recurring | Estimated Fair Value | Foreign exchange contracts |  |
Derivative |  |
Derivative assets | 14,722 | 11,874
Derivative liabilities | (13,161) | (11,213)
Fair Value, Measurements, Recurring | Estimated Fair Value | RPAs |  |
Derivative |  |
Derivative assets | 2 | 3
Derivative liabilities | (2) | (3)
Fair Value, Measurements, Recurring | Estimated Fair Value | Warrants |  |
Derivative |  |
Derivative assets | 786 |
Fair Value, Measurements, Recurring | Estimated Fair Value | Interest rate swaps on certificates of deposit |  |
Derivative |  |
Derivative liabilities | (6,686) | (5,976)
Fair Value, Measurements, Recurring | Estimated Fair Value | Foreign currency forward contracts |  |
Derivative |  |
Derivative assets |  | 4,325
Fair Value, Measurements, Recurring | Estimated Fair Value | U.S. Treasury securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 546,857 | 720,479
Fair Value, Measurements, Recurring | Estimated Fair Value | U.S. government agency and U.S. government sponsored enterprise debt securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 173,585 | 274,866
Fair Value, Measurements, Recurring | Estimated Fair Value | 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 | 325,144 | 266,799
Fair Value, Measurements, Recurring | Estimated Fair Value | 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 | 1,128,531 | 1,258,747
Fair Value, Measurements, Recurring | Estimated Fair Value | Municipal securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 105,502 | 147,654
Fair Value, Measurements, Recurring | Estimated Fair Value | Non-agency residential mortgage-backed securities | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 10,210 | 11,477
Fair Value, Measurements, Recurring | Estimated Fair Value | Corporate debt securities | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 2,296 | 222,377
Fair Value, Measurements, Recurring | Estimated Fair Value | Corporate debt securities | Non-investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 9,492 | 9,173
Fair Value, Measurements, Recurring | Estimated Fair Value | Foreign bonds | Investment grade |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | 479,687 | 383,894
Fair Value, Measurements, Recurring | Estimated Fair Value | Other securities |  |
Investment securities available-for-sale |  |
Available-for-sale investment securities | $ 41,421 | $ 40,329

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