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Loans Receivable and Allowance for Credit Losses (Impaired Loans) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2019 | Sep. 30, 2020 | Jun. 30, 2020 | Dec. 31, 2019 | Jun. 30, 2019 | Dec. 31, 2018
Impaired loans disclosures |  |  |  |  |  |  |
Allowance for loan losses |  |  | $ 618,252 |  | $ 358,287 |  |
Commercial lending |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Collateral dependent loan |  |  | 109,700 |  |  |  |
Commercial lending | Commercial and industrial (“C&I”) |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Allowance for loan losses | $ 218,869 | $ 218,869 | 389,021 | $ 380,723 | 238,376 | $ 205,503 | $ 189,117
Commercial lending | Commercial real estate (“CRE”) |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Allowance for loan losses | 37,473 | 37,473 | 166,810 | 176,040 | 40,509 | 39,811 | 40,666
Commercial lending | Real estate loan | Multifamily residential |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Allowance for loan losses | 20,307 | 20,307 | 23,807 | 25,058 | 22,826 | 19,280 | 19,885
Commercial lending | Construction and land |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Allowance for loan losses | 29,171 | 29,171 | 10,401 | 18,551 | 19,404 | 22,961 | 20,290
Consumer lending |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Collateral dependent loan |  |  | 17,600 |  |  |  |
Consumer lending | Real estate loan | Single-family residential |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Allowance for loan losses | 29,935 | 29,935 | 22,622 | 25,314 | 28,527 | 32,763 | 31,340
Consumer lending | HELOCs |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Allowance for loan losses | 5,856 | 5,856 | 3,273 | 3,867 | 5,265 | 6,177 | 5,774
Consumer lending | Other consumer |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Allowance for loan losses | 3,965 | 3,965 | $ 2,318 | $ 2,518 | 3,380 | $ 4,130 | $ 4,250
Non-PCI Loans |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Unpaid Principal Balance |  |  |  |  | 266,772 |  |
Recorded Investment With No Allowance |  |  |  |  | 129,748 |  |
Recorded Investment With Allowance |  |  |  |  | 68,369 |  |
Total Recorded Investment |  |  |  |  | 198,117 |  |
Related Allowance |  |  |  |  | 5,593 |  |
Average Recorded Investment | 225,800 | 287,022 |  |  |  |  |
Recognized Interest Income | 673 | 3,173 |  |  |  |  |
Allowance for loan losses |  |  |  |  | 358,287 |  |
Non-PCI Loans | Commercial lending |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Unpaid Principal Balance |  |  |  |  | 226,918 |  |
Recorded Investment With No Allowance |  |  |  |  | 115,116 |  |
Recorded Investment With Allowance |  |  |  |  | 44,699 |  |
Total Recorded Investment |  |  |  |  | 159,815 |  |
Related Allowance |  |  |  |  | 3,033 |  |
Average Recorded Investment | 184,135 | 237,209 |  |  |  |  |
Recognized Interest Income | 512 | 2,698 |  |  |  |  |
Non-PCI Loans | Commercial lending | Commercial and industrial (“C&I”) |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Unpaid Principal Balance |  |  |  |  | 174,656 |  |
Recorded Investment With No Allowance |  |  |  |  | 73,956 |  |
Recorded Investment With Allowance |  |  |  |  | 40,086 |  |
Total Recorded Investment |  |  |  |  | 114,042 |  |
Related Allowance |  |  |  |  | 2,881 |  |
Average Recorded Investment | 150,063 | 198,024 |  |  |  |  |
Recognized Interest Income | 340 | 2,156 |  |  |  |  |
Non-PCI Loans | Commercial lending | Commercial real estate (“CRE”) |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Unpaid Principal Balance |  |  |  |  | 27,601 |  |
Recorded Investment With No Allowance |  |  |  |  | 20,098 |  |
Recorded Investment With Allowance |  |  |  |  | 1,520 |  |
Total Recorded Investment |  |  |  |  | 21,618 |  |
Related Allowance |  |  |  |  | 97 |  |
Average Recorded Investment | 28,846 | 33,329 |  |  |  |  |
Recognized Interest Income | 114 | 363 |  |  |  |  |
Non-PCI Loans | Commercial lending | Real estate loan | Multifamily residential |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Unpaid Principal Balance |  |  |  |  | 4,965 |  |
Recorded Investment With No Allowance |  |  |  |  | 1,371 |  |
Recorded Investment With Allowance |  |  |  |  | 3,093 |  |
Total Recorded Investment |  |  |  |  | 4,464 |  |
Related Allowance |  |  |  |  | 55 |  |
Average Recorded Investment | 5,226 | 5,856 |  |  |  |  |
Recognized Interest Income | 58 | 179 |  |  |  |  |
Non-PCI Loans | Commercial lending | Construction and land |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Unpaid Principal Balance |  |  |  |  | 19,696 |  |
Recorded Investment With No Allowance |  |  |  |  | 19,691 |  |
Recorded Investment With Allowance |  |  |  |  | 0 |  |
Total Recorded Investment |  |  |  |  | 19,691 |  |
Related Allowance |  |  |  |  | 0 |  |
Non-PCI Loans | Commercial lending | Total CRE |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Unpaid Principal Balance |  |  |  |  | 52,262 |  |
Recorded Investment With No Allowance |  |  |  |  | 41,160 |  |
Recorded Investment With Allowance |  |  |  |  | 4,613 |  |
Total Recorded Investment |  |  |  |  | 45,773 |  |
Related Allowance |  |  |  |  | 152 |  |
Average Recorded Investment | 34,072 | 39,185 |  |  |  |  |
Recognized Interest Income | 172 | 542 |  |  |  |  |
Non-PCI Loans | Consumer lending |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Unpaid Principal Balance |  |  |  |  | 39,854 |  |
Recorded Investment With No Allowance |  |  |  |  | 14,632 |  |
Recorded Investment With Allowance |  |  |  |  | 23,670 |  |
Total Recorded Investment |  |  |  |  | 38,302 |  |
Related Allowance |  |  |  |  | 2,560 |  |
Average Recorded Investment | 41,665 | 49,813 |  |  |  |  |
Recognized Interest Income | 161 | 475 |  |  |  |  |
Non-PCI Loans | Consumer lending | Real estate loan | Single-family residential |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Unpaid Principal Balance |  |  |  |  | 23,626 |  |
Recorded Investment With No Allowance |  |  |  |  | 8,507 |  |
Recorded Investment With Allowance |  |  |  |  | 13,704 |  |
Total Recorded Investment |  |  |  |  | 22,211 |  |
Related Allowance |  |  |  |  | 35 |  |
Average Recorded Investment | 23,779 | 27,758 |  |  |  |  |
Recognized Interest Income | 124 | 382 |  |  |  |  |
Non-PCI Loans | Consumer lending | HELOCs |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Unpaid Principal Balance |  |  |  |  | 13,711 |  |
Recorded Investment With No Allowance |  |  |  |  | 6,125 |  |
Recorded Investment With Allowance |  |  |  |  | 7,449 |  |
Total Recorded Investment |  |  |  |  | 13,574 |  |
Related Allowance |  |  |  |  | 8 |  |
Average Recorded Investment | 15,382 | 19,529 |  |  |  |  |
Recognized Interest Income | 37 | 93 |  |  |  |  |
Non-PCI Loans | Consumer lending | Total residential mortgage |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Unpaid Principal Balance |  |  |  |  | 37,337 |  |
Recorded Investment With No Allowance |  |  |  |  | 14,632 |  |
Recorded Investment With Allowance |  |  |  |  | 21,153 |  |
Total Recorded Investment |  |  |  |  | 35,785 |  |
Related Allowance |  |  |  |  | 43 |  |
Average Recorded Investment | 39,161 | 47,287 |  |  |  |  |
Recognized Interest Income | 161 | 475 |  |  |  |  |
Non-PCI Loans | Consumer lending | Other consumer |  |  |  |  |  |  |
Impaired loans disclosures |  |  |  |  |  |  |
Unpaid Principal Balance |  |  |  |  | 2,517 |  |
Recorded Investment With No Allowance |  |  |  |  | 0 |  |
Recorded Investment With Allowance |  |  |  |  | 2,517 |  |
Total Recorded Investment |  |  |  |  | 2,517 |  |
Related Allowance |  |  |  |  | $ 2,517 |  |
Average Recorded Investment | 2,504 | 2,526 |  |  |  |  |
Recognized Interest Income | $ 0 | $ 0 |  |  |  |  |

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