XML 90 R70.htm IDEA: XBRL DOCUMENT
v3.20.2

Loans Receivable and Allowance for Credit Losses (Credit Risk Ratings and/or Vintage Years for Loans Held-for-Investment by Portfolio Segment) (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | $ 5,896,909 |
2019 | 8,429,073 |
2018 | 5,796,044 |
2017 | 3,409,990 |
2016 | 1,712,616 |
Prior | 3,798,982 |
Revolving Loans Amortized Cost Basis | 7,993,253 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 192,545 |
Total | 37,229,412 | $ 34,778,539
Commercial lending |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 4,742,649 |
2019 | 6,434,759 |
2018 | 4,088,402 |
2017 | 2,226,428 |
2016 | 1,108,642 |
Prior | 2,585,072 |
Revolving Loans Amortized Cost Basis | 6,718,408 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 20,546 |
Total | 27,924,906 | 25,914,252
Commercial lending | Commercial and industrial (“C&I”) |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 2,931,604 |
2019 | 2,173,071 |
2018 | 924,901 |
2017 | 359,207 |
2016 | 92,427 |
Prior | 389,608 |
Revolving Loans Amortized Cost Basis | 6,542,043 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 9,830 |
Total | 13,422,691 | 12,150,931
Commercial lending | Commercial and industrial (“C&I”) | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 2,922,977 |
2019 | 2,010,048 |
2018 | 818,374 |
2017 | 328,471 |
2016 | 85,000 |
Prior | 380,727 |
Revolving Loans Amortized Cost Basis | 6,007,247 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 9,830 |
Total | 12,562,674 |
Commercial lending | Commercial and industrial (“C&I”) | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 525 |
2019 | 80,449 |
2018 | 54,144 |
2017 | 22,757 |
2016 | 150 |
Prior | 6,105 |
Revolving Loans Amortized Cost Basis | 251,461 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 415,591 |
Commercial lending | Commercial and industrial (“C&I”) | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 8,102 |
2019 | 82,574 |
2018 | 52,383 |
2017 | 7,979 |
2016 | 6,313 |
Prior | 2,515 |
Revolving Loans Amortized Cost Basis | 283,335 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 443,201 |
Commercial lending | Commercial and industrial (“C&I”) | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 964 |
Prior | 261 |
Revolving Loans Amortized Cost Basis | 0 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 1,225 |
Commercial lending | Commercial real estate (“CRE”) |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 1,271,194 |
2019 | 2,911,788 |
2018 | 2,468,368 |
2017 | 1,446,468 |
2016 | 813,052 |
Prior | 1,809,972 |
Revolving Loans Amortized Cost Basis | 170,556 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 10,716 |
Total | 10,902,114 | 10,278,448
Commercial lending | Commercial real estate (“CRE”) | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 1,249,819 |
2019 | 2,859,844 |
2018 | 2,410,797 |
2017 | 1,380,086 |
2016 | 794,228 |
Prior | 1,722,081 |
Revolving Loans Amortized Cost Basis | 170,556 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 10,716 |
Total | 10,598,127 |
Commercial lending | Commercial real estate (“CRE”) | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 13,072 |
2019 | 0 |
2018 | 49,860 |
2017 | 22,468 |
2016 | 1,611 |
Prior | 45,309 |
Revolving Loans Amortized Cost Basis | 0 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 132,320 |
Commercial lending | Commercial real estate (“CRE”) | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 8,303 |
2019 | 51,944 |
2018 | 7,711 |
2017 | 43,914 |
2016 | 17,213 |
Prior | 42,582 |
Revolving Loans Amortized Cost Basis | 0 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 171,667 |
Commercial lending | Real estate loan | Multifamily residential |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 489,855 |
2019 | 1,066,230 |
2018 | 509,563 |
2017 | 414,771 |
2016 | 181,527 |
Prior | 364,630 |
Revolving Loans Amortized Cost Basis | 5,809 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 3,032,385 | 2,856,374
Commercial lending | Real estate loan | Multifamily residential | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 489,855 |
2019 | 1,045,053 |
2018 | 507,413 |
2017 | 414,771 |
2016 | 181,265 |
Prior | 357,680 |
Revolving Loans Amortized Cost Basis | 5,809 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 3,001,846 |
Commercial lending | Real estate loan | Multifamily residential | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 20,433 |
2018 | 0 |
2017 | 0 |
2016 | 262 |
Prior | 1,228 |
Revolving Loans Amortized Cost Basis | 0 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 21,923 |
Commercial lending | Real estate loan | Multifamily residential | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 744 |
2018 | 2,150 |
2017 | 0 |
2016 | 0 |
Prior | 5,722 |
Revolving Loans Amortized Cost Basis | 0 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 8,616 |
Commercial lending | Construction and land |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 49,996 |
2019 | 283,670 |
2018 | 185,570 |
2017 | 5,982 |
2016 | 21,636 |
Prior | 20,862 |
Revolving Loans Amortized Cost Basis | 0 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 567,716 | 628,499
Commercial lending | Construction and land | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 46,378 |
2019 | 283,670 |
2018 | 185,570 |
2017 | 5,982 |
2016 | 21,636 |
Prior | 1,170 |
Revolving Loans Amortized Cost Basis | 0 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 544,406 |
Commercial lending | Construction and land | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 3,618 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 19,692 |
Revolving Loans Amortized Cost Basis | 0 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 23,310 |
Commercial lending | Total CRE |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 1,811,045 |
2019 | 4,261,688 |
2018 | 3,163,501 |
2017 | 1,867,221 |
2016 | 1,016,215 |
Prior | 2,195,464 |
Revolving Loans Amortized Cost Basis | 176,365 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 10,716 |
Total | 14,502,215 | 13,763,321
Consumer lending |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 1,154,260 |
2019 | 1,994,314 |
2018 | 1,707,642 |
2017 | 1,183,562 |
2016 | 603,974 |
Prior | 1,213,910 |
Revolving Loans Amortized Cost Basis | 1,274,845 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 171,999 |
Total | 9,304,506 | 8,864,287
Consumer lending | Real estate loan | Single-family residential |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 1,150,786 |
2019 | 1,989,055 |
2018 | 1,698,879 |
2017 | 1,166,652 |
2016 | 595,155 |
Prior | 1,059,567 |
Revolving Loans Amortized Cost Basis | 0 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 7,660,094 | 7,108,590
Consumer lending | Real estate loan | Single-family residential | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 1,150,786 |
2019 | 1,987,025 |
2018 | 1,694,022 |
2017 | 1,162,434 |
2016 | 593,501 |
Prior | 1,047,965 |
Revolving Loans Amortized Cost Basis | 0 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 7,635,733 |
Consumer lending | Real estate loan | Single-family residential | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 637 |
2018 | 1,601 |
2017 | 836 |
2016 | 305 |
Prior | 1,834 |
Revolving Loans Amortized Cost Basis | 0 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 5,213 |
Consumer lending | Real estate loan | Single-family residential | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 1,393 |
2018 | 3,256 |
2017 | 3,382 |
2016 | 1,349 |
Prior | 9,768 |
Revolving Loans Amortized Cost Basis | 0 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 19,148 |
Consumer lending | HELOCs |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 185 |
2019 | 987 |
2018 | 5,405 |
2017 | 12,581 |
2016 | 8,819 |
Prior | 22,515 |
Revolving Loans Amortized Cost Basis | 1,239,460 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 171,999 |
Total | 1,461,951 | 1,472,783
Consumer lending | HELOCs | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 185 |
2019 | 836 |
2018 | 4,417 |
2017 | 7,949 |
2016 | 7,511 |
Prior | 18,097 |
Revolving Loans Amortized Cost Basis | 1,239,458 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 168,658 |
Total | 1,447,111 |
Consumer lending | HELOCs | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 0 |
2018 | 200 |
2017 | 0 |
2016 | 0 |
Prior | 380 |
Revolving Loans Amortized Cost Basis | 2 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 190 |
Total | 772 |
Consumer lending | HELOCs | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 0 |
2019 | 151 |
2018 | 788 |
2017 | 4,632 |
2016 | 1,308 |
Prior | 4,038 |
Revolving Loans Amortized Cost Basis | 0 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 3,151 |
Total | 14,068 |
Consumer lending | Total residential mortgage |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 1,150,971 |
2019 | 1,990,042 |
2018 | 1,704,284 |
2017 | 1,179,233 |
2016 | 603,974 |
Prior | 1,082,082 |
Revolving Loans Amortized Cost Basis | 1,239,460 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 171,999 |
Total | 9,122,045 | 8,581,373
Consumer lending | Other consumer |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 3,289 |
2019 | 4,272 |
2018 | 3,358 |
2017 | 4,329 |
2016 | 0 |
Prior | 131,828 |
Revolving Loans Amortized Cost Basis | 35,385 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 182,461 | 282,914
Consumer lending | Other consumer | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 3,236 |
2019 | 4,272 |
2018 | 3,358 |
2017 | 1,838 |
2016 | 0 |
Prior | 131,825 |
Revolving Loans Amortized Cost Basis | 35,372 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 179,901 |
Consumer lending | Other consumer | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 51 |
2019 | 0 |
2018 | 0 |
2017 | 0 |
2016 | 0 |
Prior | 0 |
Revolving Loans Amortized Cost Basis | 0 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | 51 |
Consumer lending | Other consumer | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
2020 | 2 |
2019 | 0 |
2018 | 0 |
2017 | 2,491 |
2016 | 0 |
Prior | 3 |
Revolving Loans Amortized Cost Basis | 13 |
Revolving Loans Converted to Term Loans Amortized Cost Basis | 0 |
Total | $ 2,509 |
Non-PCI Loans |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 34,555,668
Non-PCI Loans | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 33,582,886
Non-PCI Loans | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 515,702
Non-PCI Loans | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 440,105
Non-PCI Loans | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 16,975
Non-PCI Loans | Commercial lending |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 25,777,039
Non-PCI Loans | Commercial lending | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 24,836,765
Non-PCI Loans | Commercial lending | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 510,632
Non-PCI Loans | Commercial lending | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 412,667
Non-PCI Loans | Commercial lending | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 16,975
Non-PCI Loans | Commercial lending | Commercial and industrial (“C&I”) |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 12,149,121
Non-PCI Loans | Commercial lending | Commercial and industrial (“C&I”) | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 11,423,094
Non-PCI Loans | Commercial lending | Commercial and industrial (“C&I”) | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 406,543
Non-PCI Loans | Commercial lending | Commercial and industrial (“C&I”) | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 302,509
Non-PCI Loans | Commercial lending | Commercial and industrial (“C&I”) | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 16,975
Non-PCI Loans | Commercial lending | Commercial real estate (“CRE”) |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 10,165,247
Non-PCI Loans | Commercial lending | Commercial real estate (“CRE”) | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 10,003,749
Non-PCI Loans | Commercial lending | Commercial real estate (“CRE”) | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 83,683
Non-PCI Loans | Commercial lending | Commercial real estate (“CRE”) | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 77,815
Non-PCI Loans | Commercial lending | Commercial real estate (“CRE”) | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
Non-PCI Loans | Commercial lending | Real estate loan | Multifamily residential |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 2,834,212
Non-PCI Loans | Commercial lending | Real estate loan | Multifamily residential | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 2,806,475
Non-PCI Loans | Commercial lending | Real estate loan | Multifamily residential | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 20,406
Non-PCI Loans | Commercial lending | Real estate loan | Multifamily residential | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 7,331
Non-PCI Loans | Commercial lending | Real estate loan | Multifamily residential | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
Non-PCI Loans | Commercial lending | Construction and land |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 628,459
Non-PCI Loans | Commercial lending | Construction and land | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 603,447
Non-PCI Loans | Commercial lending | Construction and land | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
Non-PCI Loans | Commercial lending | Construction and land | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 25,012
Non-PCI Loans | Commercial lending | Construction and land | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
Non-PCI Loans | Commercial lending | Total CRE |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 13,627,918
Non-PCI Loans | Commercial lending | Total CRE | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 13,413,671
Non-PCI Loans | Commercial lending | Total CRE | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 104,089
Non-PCI Loans | Commercial lending | Total CRE | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 110,158
Non-PCI Loans | Commercial lending | Total CRE | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
Non-PCI Loans | Consumer lending |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 8,778,629
Non-PCI Loans | Consumer lending | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 8,746,121
Non-PCI Loans | Consumer lending | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 5,070
Non-PCI Loans | Consumer lending | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 27,438
Non-PCI Loans | Consumer lending | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
Non-PCI Loans | Consumer lending | Real estate loan | Single-family residential |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 7,028,979
Non-PCI Loans | Consumer lending | Real estate loan | Single-family residential | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 7,012,522
Non-PCI Loans | Consumer lending | Real estate loan | Single-family residential | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 2,278
Non-PCI Loans | Consumer lending | Real estate loan | Single-family residential | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 14,179
Non-PCI Loans | Consumer lending | Real estate loan | Single-family residential | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
Non-PCI Loans | Consumer lending | HELOCs |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 1,466,736
Non-PCI Loans | Consumer lending | HELOCs | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 1,453,207
Non-PCI Loans | Consumer lending | HELOCs | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 2,787
Non-PCI Loans | Consumer lending | HELOCs | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 10,742
Non-PCI Loans | Consumer lending | HELOCs | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
Non-PCI Loans | Consumer lending | Total residential mortgage |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 8,495,715
Non-PCI Loans | Consumer lending | Total residential mortgage | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 8,465,729
Non-PCI Loans | Consumer lending | Total residential mortgage | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 5,065
Non-PCI Loans | Consumer lending | Total residential mortgage | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 24,921
Non-PCI Loans | Consumer lending | Total residential mortgage | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
Non-PCI Loans | Consumer lending | Other consumer |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 282,914
Non-PCI Loans | Consumer lending | Other consumer | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 280,392
Non-PCI Loans | Consumer lending | Other consumer | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 5
Non-PCI Loans | Consumer lending | Other consumer | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 2,517
Non-PCI Loans | Consumer lending | Other consumer | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 222,871
PCD or PCI loans | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 211,635
PCD or PCI loans | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 11,236
PCD or PCI loans | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Commercial lending |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 137,213
PCD or PCI loans | Commercial lending | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 126,269
PCD or PCI loans | Commercial lending | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Commercial lending | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 10,944
PCD or PCI loans | Commercial lending | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Commercial lending | Commercial and industrial (“C&I”) |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 1,810
PCD or PCI loans | Commercial lending | Commercial and industrial (“C&I”) | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 1,810
PCD or PCI loans | Commercial lending | Commercial and industrial (“C&I”) | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Commercial lending | Commercial and industrial (“C&I”) | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Commercial lending | Commercial and industrial (“C&I”) | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Commercial lending | Commercial real estate (“CRE”) |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 113,201
PCD or PCI loans | Commercial lending | Commercial real estate (“CRE”) | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 102,257
PCD or PCI loans | Commercial lending | Commercial real estate (“CRE”) | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Commercial lending | Commercial real estate (“CRE”) | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 10,944
PCD or PCI loans | Commercial lending | Commercial real estate (“CRE”) | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Commercial lending | Real estate loan | Multifamily residential |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 22,162
PCD or PCI loans | Commercial lending | Real estate loan | Multifamily residential | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 22,162
PCD or PCI loans | Commercial lending | Real estate loan | Multifamily residential | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Commercial lending | Real estate loan | Multifamily residential | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Commercial lending | Real estate loan | Multifamily residential | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Commercial lending | Construction and land |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 40
PCD or PCI loans | Commercial lending | Construction and land | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 40
PCD or PCI loans | Commercial lending | Construction and land | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Commercial lending | Construction and land | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Commercial lending | Construction and land | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Commercial lending | Total CRE |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 135,403
PCD or PCI loans | Commercial lending | Total CRE | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 124,459
PCD or PCI loans | Commercial lending | Total CRE | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Commercial lending | Total CRE | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 10,944
PCD or PCI loans | Commercial lending | Total CRE | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Consumer lending |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 85,658
PCD or PCI loans | Consumer lending | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 85,366
PCD or PCI loans | Consumer lending | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Consumer lending | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 292
PCD or PCI loans | Consumer lending | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Consumer lending | Real estate loan | Single-family residential |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 79,611
PCD or PCI loans | Consumer lending | Real estate loan | Single-family residential | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 79,517
PCD or PCI loans | Consumer lending | Real estate loan | Single-family residential | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Consumer lending | Real estate loan | Single-family residential | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 94
PCD or PCI loans | Consumer lending | Real estate loan | Single-family residential | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Consumer lending | HELOCs |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 6,047
PCD or PCI loans | Consumer lending | HELOCs | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 5,849
PCD or PCI loans | Consumer lending | HELOCs | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Consumer lending | HELOCs | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 198
PCD or PCI loans | Consumer lending | HELOCs | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Consumer lending | Total residential mortgage |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 85,658
PCD or PCI loans | Consumer lending | Total residential mortgage | Pass |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 85,366
PCD or PCI loans | Consumer lending | Total residential mortgage | Special Mention |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Consumer lending | Total residential mortgage | Substandard |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 292
PCD or PCI loans | Consumer lending | Total residential mortgage | Doubtful |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | 0
PCD or PCI loans | Consumer lending | Other consumer |  |
Financing Receivable, Vintage Year/Credit Quality Indicator [Line Items] |  |
Total |  | $ 0

X
- Definition Financing Receivable, Revolving Converted to Term Loans + References No definition available. + Details
Name: | ewbc_FinancingReceivableRevolvingConvertedtoTermLoans
Namespace Prefix: | ewbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of financing receivable originated more than five years prior to current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of financing receivable originated four years prior to current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of financing receivable originated in current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of financing receivable originated in fiscal year prior to current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919232-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448 + Details
Name: | us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of financing receivable originated three years prior to current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of financing receivable originated two years prior to current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919232-210447 + Details
Name: | us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of financing receivable that can be withdrawn, repaid and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919232-210447 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448 + Details
Name: | us-gaap_FinancingReceivableRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, before allowance for credit loss, of financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919230-210447 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922355-210448 + Details
Name: | us-gaap_NotesReceivableGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ewbc_CommercialAndIndustrialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_MultifamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ewbc_ConstructionAndLandLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ewbc_TotalCommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_SingleFamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ewbc_TotalResidentialMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=ewbc_OtherConsumerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditLossStatusAxis=ewbc_ReceivablesOriginatedOrAcquiredWithoutDeterioratedCreditQualityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditLossStatusAxis=us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |