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Loans Receivable and Allowance for Credit Losses (Details 3) - Loans Receivable - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | $ 27,210,666 | $ 25,503,139
CRE |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 9,125,849 | 8,690,863
CRE | Income producing |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 8,465,030 | 8,016,109
CRE | Construction |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 550,781 | 551,560
CRE | Land |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 110,038 | 123,194
C&I |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 10,187,349 | 9,640,563
C&I | Commercial business |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 9,424,236 | 8,959,633
C&I | Trade finance |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 763,113 | 680,930
Residential |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 5,774,229 | 5,095,718
Residential | Real estate loan | Single-family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 4,001,488 | 3,509,779
Residential | Real estate loan | Multifamily |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 1,772,741 | 1,585,939
Consumer |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 2,123,239 | 2,075,995
Non-PCI Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 26,645,211 | 24,860,694
Non-PCI Loans | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 25,997,635 | 24,177,983
Non-PCI Loans | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 237,685 | 212,927
Non-PCI Loans | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 385,050 | 464,609
Non-PCI Loans | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 24,841 | 5,167
Non-PCI Loans | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 8
Non-PCI Loans | CRE |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 8,801,059 | 8,340,497
Non-PCI Loans | CRE | Income producing |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 8,141,483 | 7,667,661
Non-PCI Loans | CRE | Income producing | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 8,003,443 | 7,476,804
Non-PCI Loans | CRE | Income producing | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 18,859 | 29,005
Non-PCI Loans | CRE | Income producing | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 119,181 | 161,852
Non-PCI Loans | CRE | Income producing | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
Non-PCI Loans | CRE | Income producing | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
Non-PCI Loans | CRE | Construction |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 550,781 | 551,560
Non-PCI Loans | CRE | Construction | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 521,240 | 551,560
Non-PCI Loans | CRE | Construction | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 20,548 | 0
Non-PCI Loans | CRE | Construction | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 8,993 | 0
Non-PCI Loans | CRE | Construction | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
Non-PCI Loans | CRE | Construction | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
Non-PCI Loans | CRE | Land |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 108,795 | 121,276
Non-PCI Loans | CRE | Land | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 93,691 | 107,976
Non-PCI Loans | CRE | Land | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
Non-PCI Loans | CRE | Land | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 15,104 | 13,290
Non-PCI Loans | CRE | Land | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 10
Non-PCI Loans | CRE | Land | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
Non-PCI Loans | C&I |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 10,166,688 | 9,602,176
Non-PCI Loans | C&I | Commercial business |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 9,403,575 | 8,921,246
Non-PCI Loans | C&I | Commercial business | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 9,049,939 | 8,559,674
Non-PCI Loans | C&I | Commercial business | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 160,656 | 155,276
Non-PCI Loans | C&I | Commercial business | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 168,139 | 201,139
Non-PCI Loans | C&I | Commercial business | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 24,841 | 5,157
Non-PCI Loans | C&I | Commercial business | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
Non-PCI Loans | C&I | Trade finance |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 763,113 | 680,930
Non-PCI Loans | C&I | Trade finance | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 728,700 | 635,027
Non-PCI Loans | C&I | Trade finance | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 21,176 | 9,435
Non-PCI Loans | C&I | Trade finance | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 13,237 | 36,460
Non-PCI Loans | C&I | Trade finance | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
Non-PCI Loans | C&I | Trade finance | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 8
Non-PCI Loans | Residential |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 5,570,781 | 4,860,954
Non-PCI Loans | Residential | Real estate loan | Single-family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 3,873,803 | 3,370,669
Non-PCI Loans | Residential | Real estate loan | Single-family | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 3,838,847 | 3,341,015
Non-PCI Loans | Residential | Real estate loan | Single-family | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 10,216 | 10,179
Non-PCI Loans | Residential | Real estate loan | Single-family | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 24,740 | 19,475
Non-PCI Loans | Residential | Real estate loan | Single-family | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
Non-PCI Loans | Residential | Real estate loan | Single-family | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
Non-PCI Loans | Residential | Real estate loan | Multifamily |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 1,696,978 | 1,490,285
Non-PCI Loans | Residential | Real estate loan | Multifamily | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 1,676,251 | 1,462,522
Non-PCI Loans | Residential | Real estate loan | Multifamily | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 2,268
Non-PCI Loans | Residential | Real estate loan | Multifamily | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 20,727 | 25,495
Non-PCI Loans | Residential | Real estate loan | Multifamily | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
Non-PCI Loans | Residential | Real estate loan | Multifamily | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
Non-PCI Loans | Consumer |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 2,106,683 | 2,057,067
Non-PCI Loans | Consumer | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 2,085,524 | 2,043,405
Non-PCI Loans | Consumer | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 6,230 | 6,764
Non-PCI Loans | Consumer | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 14,929 | 6,898
Non-PCI Loans | Consumer | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
Non-PCI Loans | Consumer | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 565,455 | 642,445
PCI Loans | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 499,962 | 568,844
PCI Loans | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 2,932 | 5,566
PCI Loans | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 62,561 | 68,035
PCI Loans | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | CRE |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 324,790 | 350,366
PCI Loans | CRE | Income producing |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 323,547 | 348,448
PCI Loans | CRE | Income producing | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 272,926 | 293,529
PCI Loans | CRE | Income producing | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 472 | 3,239
PCI Loans | CRE | Income producing | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 50,149 | 51,680
PCI Loans | CRE | Income producing | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | CRE | Income producing | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | CRE | Construction |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | CRE | Land |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 1,243 | 1,918
PCI Loans | CRE | Land | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 914 | 1,562
PCI Loans | CRE | Land | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | CRE | Land | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 329 | 356
PCI Loans | CRE | Land | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | CRE | Land | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | C&I |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 20,661 | 38,387
PCI Loans | C&I | Commercial business |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 20,661 | 38,387
PCI Loans | C&I | Commercial business | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 17,312 | 33,885
PCI Loans | C&I | Commercial business | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 585 | 772
PCI Loans | C&I | Commercial business | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 2,764 | 3,730
PCI Loans | C&I | Commercial business | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | C&I | Commercial business | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | C&I | Trade finance |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | Residential |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 203,448 | 234,764
PCI Loans | Residential | Real estate loan | Single-family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 127,685 | 139,110
PCI Loans | Residential | Real estate loan | Single-family | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 124,216 | 136,245
PCI Loans | Residential | Real estate loan | Single-family | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 1,506 | 1,239
PCI Loans | Residential | Real estate loan | Single-family | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 1,963 | 1,626
PCI Loans | Residential | Real estate loan | Single-family | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | Residential | Real estate loan | Single-family | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | Residential | Real estate loan | Multifamily |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 75,763 | 95,654
PCI Loans | Residential | Real estate loan | Multifamily | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 69,657 | 86,190
PCI Loans | Residential | Real estate loan | Multifamily | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | Residential | Real estate loan | Multifamily | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 6,106 | 9,464
PCI Loans | Residential | Real estate loan | Multifamily | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | Residential | Real estate loan | Multifamily | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | Consumer |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 16,556 | 18,928
PCI Loans | Consumer | Pass/Watch |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 14,937 | 17,433
PCI Loans | Consumer | Special Mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 369 | 316
PCI Loans | Consumer | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 1,250 | 1,179
PCI Loans | Consumer | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | 0 | 0
PCI Loans | Consumer | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total loans held-for-investment | $ 0 | $ 0

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