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Loans Receivable and Allowance for Credit Losses (Tables) | 12 Months Ended
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Dec. 31, 2017
Loans and Leases Receivable Disclosure [Abstract] |
Schedule of the composition of Non-PCI and PCI loans | The following table presents the composition of the Company’s non-PCI and PCI loans as of December 31, 2017 and 2016:
($ in thousands) |  | December 31, 2017 |  | December 31, 2016
| Non-PCI Loans (1) |  | PCI Loans (2) |  | Total (1)(2) |  | Non-PCI Loans (1) |  | PCI Loans (2) |  | Total (1)(2)
Commercial lending: |  |  |  |  |  |  |  |  |  |  |  |
C&I |  | $ | 10,685,436 |  |  | $ | 11,795 |  |  | $ | 10,697,231 |  |  | $ | 9,602,176 |  |  | $ | 38,387 |  |  | $ | 9,640,563 |
CRE |  | 8,659,209 |  |  | 277,688 |  |  | 8,936,897 |  |  | 7,667,661 |  |  | 348,448 |  |  | 8,016,109 |
Multifamily residential |  | 1,855,128 |  |  | 61,048 |  |  | 1,916,176 |  |  | 1,490,285 |  |  | 95,654 |  |  | 1,585,939 |
Construction and land |  | 659,326 |  |  | 371 |  |  | 659,697 |  |  | 672,836 |  |  | 1,918 |  |  | 674,754 |
Total commercial lending |  | 21,859,099 |  |  | 350,902 |  |  | 22,210,001 |  |  | 19,432,958 |  |  | 484,407 |  |  | 19,917,365 |
Consumer lending: |  |  |  |  |  |  |  |  |  |  |  |
Single-family residential |  | 4,528,911 |  |  | 117,378 |  |  | 4,646,289 |  |  | 3,370,669 |  |  | 139,110 |  |  | 3,509,779 |
HELOCs |  | 1,768,917 |  |  | 14,007 |  |  | 1,782,924 |  |  | 1,741,852 |  |  | 18,924 |  |  | 1,760,776 |
Other consumer |  | 336,504 |  |  | — |  |  | 336,504 |  |  | 315,215 |  |  | 4 |  |  | 315,219 |
Total consumer lending |  | 6,634,332 |  |  | 131,385 |  |  | 6,765,717 |  |  | 5,427,736 |  |  | 158,038 |  |  | 5,585,774 |
Total loans held-for-investment |  | $ | 28,493,431 |  |  | $ | 482,287 |  |  | $ | 28,975,718 |  |  | $ | 24,860,694 |  |  | $ | 642,445 |  |  | $ | 25,503,139 |
Allowance for loan losses |  | (287,070 | ) |  | (58 | ) |  | (287,128 | ) |  | (260,402 | ) |  | (118 | ) |  | (260,520 | )
Loans held-for-investment, net |  | $ | 28,206,361 |  |  | $ | 482,229 |  |  | $ | 28,688,590 |  |  | $ | 24,600,292 |  |  | $ | 642,327 |  |  | $ | 25,242,619 |
(1) | Includes net deferred loan fees, unearned fees, unamortized premiums and unaccreted discounts of $(34.0) million and $1.2 million as of December 31, 2017 and 2016, respectively.
(2) | Includes ASC 310-30 discount of $35.3 million and $49.4 million as of December 31, 2017 and 2016, respectively.
Summary of credit risk rating for non-PCI and PCI loans by portfolio segment | The following tables present the credit risk ratings for non-PCI loans by portfolio segment as of December 31, 2017 and 2016:
($ in thousands) |  | December 31, 2017
| Pass/Watch |  | Special Mention |  | Substandard |  | Doubtful |  | Loss |  | Total Non- PCI Loans
Commercial lending: |  |  |  |  |  |  |  |  |  |  |  |
C&I |  | $ | 10,369,516 |  |  | $ | 114,769 |  |  | $ | 180,269 |  |  | $ | 20,882 |  |  | $ | — |  |  | $ | 10,685,436 |
CRE |  | 8,484,635 |  |  | 65,616 |  |  | 108,958 |  |  | — |  |  | — |  |  | 8,659,209 |
Multifamily residential |  | 1,839,958 |  |  | — |  |  | 15,170 |  |  | — |  |  | — |  |  | 1,855,128 |
Construction and land |  | 614,441 |  |  | 4,590 |  |  | 40,295 |  |  | — |  |  | — |  |  | 659,326 |
Total commercial lending |  | 21,308,550 |  |  | 184,975 |  |  | 344,692 |  |  | 20,882 |  |  | — |  |  | 21,859,099 |
Consumer lending: |  |  |  |  |  |  |  |  |  |  |  |
Single-family residential |  | 4,490,672 |  |  | 16,504 |  |  | 21,735 |  |  | — |  |  | — |  |  | 4,528,911 |
HELOCs |  | 1,744,903 |  |  | 11,900 |  |  | 12,114 |  |  | — |  |  | — |  |  | 1,768,917 |
Other consumer |  | 333,895 |  |  | 111 |  |  | 2,498 |  |  | — |  |  | — |  |  | 336,504 |
Total consumer lending |  | 6,569,470 |  |  | 28,515 |  |  | 36,347 |  |  | — |  |  | — |  |  | 6,634,332 |
Total |  | $ | 27,878,020 |  |  | $ | 213,490 |  |  | $ | 381,039 |  |  | $ | 20,882 |  |  | $ | — |  |  | $ | 28,493,431 |
($ in thousands) |  | December 31, 2016
| Pass/Watch |  | Special Mention |  | Substandard |  | Doubtful |  | Loss |  | Total Non- PCI Loans
Commercial lending: |  |  |  |  |  |  |  |  |  |  |  |
C&I |  | $ | 9,194,701 |  |  | $ | 164,711 |  |  | $ | 237,599 |  |  | $ | 5,157 |  |  | $ | 8 |  |  | $ | 9,602,176 |
CRE |  | 7,476,804 |  |  | 29,005 |  |  | 161,852 |  |  | — |  |  | — |  |  | 7,667,661 |
Multifamily residential |  | 1,462,522 |  |  | 2,268 |  |  | 25,495 |  |  | — |  |  | — |  |  | 1,490,285 |
Construction and land |  | 659,536 |  |  | — |  |  | 13,290 |  |  | 10 |  |  | — |  |  | 672,836 |
Total commercial lending |  | 18,793,563 |  |  | 195,984 |  |  | 438,236 |  |  | 5,167 |  |  | 8 |  |  | 19,432,958 |
Consumer lending: |  |  |  |  |  |  |  |  |  |  |  |
Single-family residential |  | 3,341,015 |  |  | 10,179 |  |  | 19,475 |  |  | — |  |  | — |  |  | 3,370,669 |
HELOCs |  | 1,728,254 |  |  | 6,717 |  |  | 6,881 |  |  | — |  |  | — |  |  | 1,741,852 |
Other consumer |  | 315,151 |  |  | 47 |  |  | 17 |  |  | — |  |  | — |  |  | 315,215 |
Total consumer lending |  | 5,384,420 |  |  | 16,943 |  |  | 26,373 |  |  | — |  |  | — |  |  | 5,427,736 |
Total |  | $ | 24,177,983 |  |  | $ | 212,927 |  |  | $ | 464,609 |  |  | $ | 5,167 |  |  | $ | 8 |  |  | $ | 24,860,694 |
The following tables present the credit risk ratings for PCI loans by portfolio segment as of December 31, 2017 and 2016:
($ in thousands) |  | December 31, 2017
| Pass/Watch |  | Special Mention |  | Substandard |  | Doubtful |  | Loss |  | Total PCI Loans
Commercial lending: |  |  |  |  |  |  |  |  |  |  |  |
C&I |  | $ | 10,712 |  |  | $ | 57 |  |  | $ | 1,026 |  |  | $ | — |  |  | $ | — |  |  | $ | 11,795 |
CRE |  | 238,605 |  |  | 531 |  |  | 38,552 |  |  | — |  |  | — |  |  | 277,688 |
Multifamily residential |  | 56,720 |  |  | — |  |  | 4,328 |  |  | — |  |  | — |  |  | 61,048 |
Construction and land |  | 44 |  |  | — |  |  | 327 |  |  | — |  |  | — |  |  | 371 |
Total commercial lending |  | 306,081 |  |  | 588 |  |  | 44,233 |  |  | — |  |  | — |  |  | 350,902 |
Consumer lending: |  |  |  |  |  |  |  |  |  |  |  |
Single-family residential |  | 113,905 |  |  | 1,543 |  |  | 1,930 |  |  | — |  |  | — |  |  | 117,378 |
HELOCs |  | 12,642 |  |  | — |  |  | 1,365 |  |  | — |  |  | — |  |  | 14,007 |
Other consumer |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total consumer lending |  | 126,547 |  |  | 1,543 |  |  | 3,295 |  |  | — |  |  | — |  |  | 131,385 |
Total (1) |  | $ | 432,628 |  |  | $ | 2,131 |  |  | $ | 47,528 |  |  | $ | — |  |  | $ | — |  |  | $ | 482,287 |
($ in thousands) |  | December 31, 2016
| Pass/Watch |  | Special Mention |  | Substandard |  | Doubtful |  | Loss |  | Total PCI Loans
Commercial lending: |  |  |  |  |  |  |  |  |  |  |  |
C&I |  | $ | 33,885 |  |  | $ | 772 |  |  | $ | 3,730 |  |  | $ | — |  |  | $ | — |  |  | $ | 38,387 |
CRE |  | 293,529 |  |  | 3,239 |  |  | 51,680 |  |  | — |  |  | — |  |  | 348,448 |
Multifamily residential |  | 86,190 |  |  | — |  |  | 9,464 |  |  | — |  |  | — |  |  | 95,654 |
Construction and land |  | 1,562 |  |  | — |  |  | 356 |  |  | — |  |  | — |  |  | 1,918 |
Total commercial lending |  | 415,166 |  |  | 4,011 |  |  | 65,230 |  |  | — |  |  | — |  |  | 484,407 |
Consumer lending: |  |  |  |  |  |  |  |  |  |  |  |
Single-family residential |  | 136,245 |  |  | 1,239 |  |  | 1,626 |  |  | — |  |  | — |  |  | 139,110 |
HELOCs |  | 17,429 |  |  | 316 |  |  | 1,179 |  |  | — |  |  | — |  |  | 18,924 |
Other consumer |  | 4 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 4 |
Total consumer lending |  | 153,678 |  |  | 1,555 |  |  | 2,805 |  |  | — |  |  | — |  |  | 158,038 |
Total (1) |  | $ | 568,844 |  |  | $ | 5,566 |  |  | $ | 68,035 |  |  | $ | — |  |  | $ | — |  |  | $ | 642,445 |
(1) | Loans net of ASC 310-30 discount.
Schedule of aging analysis on non-PCI loans | The following tables present the aging analysis on non-PCI loans as of December 31, 2017 and 2016:
($ in thousands) |  | December 31, 2017
| Accruing Loans 30-59 Days Past Due |  | Accruing Loans 60-89 Days Past Due |  | Total Accruing Past Due Loans |  | Nonaccrual Loans Less Than 90 Days Past Due |  | Nonaccrual Loans 90 or More Days Past Due |  | Total Nonaccrual Loans |  | Current Accruing Loans |  | Total Non- PCI Loans
Commercial lending: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
C&I |  | $ | 30,964 |  |  | $ | 82 |  |  | $ | 31,046 |  |  | $ | 27,408 |  |  | $ | 41,805 |  |  | $ | 69,213 |  |  | $ | 10,585,177 |  |  | $ | 10,685,436 |
CRE |  | 3,414 |  |  | 466 |  |  | 3,880 |  |  | 5,430 |  |  | 21,556 |  |  | 26,986 |  |  | 8,628,343 |  |  | 8,659,209 |
Multifamily residential |  | 4,846 |  |  | 14 |  |  | 4,860 |  |  | 1,418 |  |  | 299 |  |  | 1,717 |  |  | 1,848,551 |  |  | 1,855,128 |
Construction and land |  | 758 |  |  | — |  |  | 758 |  |  | — |  |  | 3,973 |  |  | 3,973 |  |  | 654,595 |  |  | 659,326 |
Total commercial lending |  | 39,982 |  |  | 562 |  |  | 40,544 |  |  | 34,256 |  |  | 67,633 |  |  | 101,889 |  |  | 21,716,666 |  |  | 21,859,099 |
Consumer lending: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Single-family residential |  | 13,269 |  |  | 5,355 |  |  | 18,624 |  |  | 6 |  |  | 5,917 |  |  | 5,923 |  |  | 4,504,364 |  |  | 4,528,911 |
HELOCs |  | 4,286 |  |  | 4,186 |  |  | 8,472 |  |  | 89 |  |  | 3,917 |  |  | 4,006 |  |  | 1,756,439 |  |  | 1,768,917 |
Other consumer |  | 14 |  |  | 23 |  |  | 37 |  |  | — |  |  | 2,491 |  |  | 2,491 |  |  | 333,976 |  |  | 336,504 |
Total consumer lending |  | 17,569 |  |  | 9,564 |  |  | 27,133 |  |  | 95 |  |  | 12,325 |  |  | 12,420 |  |  | 6,594,779 |  |  | 6,634,332 |
Total |  | $ | 57,551 |  |  | $ | 10,126 |  |  | $ | 67,677 |  |  | $ | 34,351 |  |  | $ | 79,958 |  |  | $ | 114,309 |  |  | $ | 28,311,445 |  |  | $ | 28,493,431 |
($ in thousands) |  | December 31, 2016
| Accruing Loans 30-59 Days Past Due |  | Accruing Loans 60-89 Days Past Due |  | Total Accruing Past Due Loans |  | Nonaccrual Loans Less Than 90 Days Past Due |  | Nonaccrual Loans 90 or More Days Past Due |  | Total Nonaccrual Loans |  | Current Accruing Loans |  | Total Non- PCI Loans
Commercial lending: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
C&I |  | $ | 45,052 |  |  | $ | 2,279 |  |  | $ | 47,331 |  |  | $ | 60,519 |  |  | $ | 20,737 |  |  | $ | 81,256 |  |  | $ | 9,473,589 |  |  | $ | 9,602,176 |
CRE |  | 6,233 |  |  | 14,080 |  |  | 20,313 |  |  | 14,872 |  |  | 12,035 |  |  | 26,907 |  |  | 7,620,441 |  |  | 7,667,661 |
Multifamily residential |  | 3,951 |  |  | 374 |  |  | 4,325 |  |  | 2,790 |  |  | 194 |  |  | 2,984 |  |  | 1,482,976 |  |  | 1,490,285 |
Construction and land |  | 4,994 |  |  | — |  |  | 4,994 |  |  | 433 |  |  | 4,893 |  |  | 5,326 |  |  | 662,516 |  |  | 672,836 |
Total commercial lending |  | 60,230 |  |  | 16,733 |  |  | 76,963 |  |  | 78,614 |  |  | 37,859 |  |  | 116,473 |  |  | 19,239,522 |  |  | 19,432,958 |
Consumer lending: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Single-family residential |  | 9,595 |  |  | 8,076 |  |  | 17,671 |  |  | — |  |  | 4,214 |  |  | 4,214 |  |  | 3,348,784 |  |  | 3,370,669 |
HELOCs |  | 2,845 |  |  | 2,606 |  |  | 5,451 |  |  | 165 |  |  | 1,965 |  |  | 2,130 |  |  | 1,734,271 |  |  | 1,741,852 |
Other consumer |  | 482 |  |  | 622 |  |  | 1,104 |  |  | — |  |  | — |  |  | — |  |  | 314,111 |  |  | 315,215 |
Total consumer lending |  | 12,922 |  |  | 11,304 |  |  | 24,226 |  |  | 165 |  |  | 6,179 |  |  | 6,344 |  |  | 5,397,166 |  |  | 5,427,736 |
Total |  | $ | 73,152 |  |  | $ | 28,037 |  |  | $ | 101,189 |  |  | $ | 78,779 |  |  | $ | 44,038 |  |  | $ | 122,817 |  |  | $ | 24,636,688 |  |  | $ | 24,860,694 |
Summary of additions and modifications to non-PCI troubled debt restructurings | The following tables present the additions to non-PCI TDRs for the years ended December 31, 2017, 2016 and 2015:
($ in thousands) |  | Loans Modified as TDRs During the Year Ended December 31, 2017
| Number of Loans |  | Pre-Modification Outstanding Recorded Investment |  | Post-Modification Outstanding Recorded Investment (1) |  | Financial Impact (2)
Commercial lending: |  |  |  |  |  |  |  |
C&I |  | 16 |  |  | $ | 43,884 |  |  | $ | 37,900 |  |  | $ | 11,520 |
CRE |  | 4 |  |  | $ | 2,675 |  |  | $ | 2,627 |  |  | $ | 157 |
Multifamily residential |  | 1 |  |  | $ | 3,655 |  |  | $ | 2,969 |  |  | $ | — |
Consumer lending: |  |  |  |  |  |  |  |
HELOCs |  | 1 |  |  | $ | 152 |  |  | $ | 155 |  |  | $ | — |
($ in thousands) |  | Loans Modified as TDRs During the Year Ended December 31, 2016
| Number of Loans |  | Pre-Modification Outstanding Recorded Investment |  | Post-Modification Outstanding Recorded Investment (1) |  | Financial Impact (2)
Commercial lending: |  |  |  |  |  |  |  |
C&I |  | 18 |  |  | $ | 65,991 |  |  | $ | 40,405 |  |  | $ | 20,574 |
CRE |  | 6 |  |  | $ | 19,275 |  |  | $ | 18,824 |  |  | $ | 701 |
Construction and land |  | 1 |  |  | $ | 5,522 |  |  | $ | 4,883 |  |  | $ | — |
Consumer lending: |  |  |  |  |  |  |  |
Single-family residential |  | 3 |  |  | $ | 1,291 |  |  | $ | 1,268 |  |  | $ | — |
HELOCs |  | 3 |  |  | $ | 491 |  |  | $ | 382 |  |  | $ | 1 |
($ in thousands) |  | Loans Modified as TDRs During the Year Ended December 31, 2015
| Number of Loans |  | Pre-Modification Outstanding Recorded Investment |  | Post-Modification Outstanding Recorded Investment (1) |  | Financial Impact (2)
Commercial lending: |  |  |  |  |  |  |  |
C&I |  | 18 |  |  | $ | 42,816 |  |  | $ | 34,165 |  |  | $ | 6,726 |
CRE |  | 3 |  |  | $ | 1,802 |  |  | $ | 1,727 |  |  | $ | — |
Construction and land |  | 2 |  |  | $ | 2,227 |  |  | $ | 83 |  |  | $ | 102 |
Consumer lending: |  |  |  |  |  |  |  |
Single-family residential |  | 1 |  |  | $ | 281 |  |  | $ | 279 |  |  | $ | 2 |
(1) | Includes subsequent payments after modification and reflects the balance as of December 31, 2017, 2016 and 2015.
(2) | The financial impact includes charge-offs and specific reserves recorded at the modification date.
The following tables present the non-PCI TDR modifications for the years ended December 31, 2017, 2016 and 2015 by modification type:
($ in thousands) |  | Modification Type During the Year Ended December 31, 2017
| Principal (1) |  | Principal and Interest (2) |  | Interest Rate Reduction |  | Interest Deferments |  | Other |  | Total
Commercial lending: |  |  |  |  |  |  |  |  |  |  |  |
C&I |  | $ | 13,568 |  |  | $ | 7,848 |  |  | $ | — |  |  | $ | — |  |  | $ | 16,484 |  |  | $ | 37,900 |
CRE |  | 2,627 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2,627 |
Multifamily residential |  | 2,969 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2,969 |
Total commercial lending |  | 19,164 |  |  | 7,848 |  |  | — |  |  | — |  |  | 16,484 |  |  | 43,496 |
Consumer lending: |  |  |  |  |  |  |  |  |  |  |  |
HELOCs |  | — |  |  | 155 |  |  | — |  |  | — |  |  | — |  |  | 155 |
Total consumer lending |  | — |  |  | 155 |  |  | — |  |  | — |  |  | — |  |  | 155 |
Total |  | $ | 19,164 |  |  | $ | 8,003 |  |  | $ | — |  |  | $ | — |  |  | $ | 16,484 |  |  | $ | 43,651 |
($ in thousands) |  | Modification Type During the Year Ended December 31, 2016
| Principal (1) |  | Principal and Interest (2) |  | Interest Rate Reduction |  | Interest Deferments |  | Other |  | Total
Commercial lending: |  |  |  |  |  |  |  |  |  |  |  |
C&I |  | $ | 34,499 |  |  | $ | — |  |  | $ | 5,876 |  |  | $ | 30 |  |  | $ | — |  |  | $ | 40,405 |
CRE |  | 17,750 |  |  | — |  |  | — |  |  | — |  |  | 1,074 |  |  | 18,824 |
Construction and land |  | 4,883 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 4,883 |
Total commercial lending |  | 57,132 |  |  | — |  |  | 5,876 |  |  | 30 |  |  | 1,074 |  |  | 64,112 |
Consumer lending: |  |  |  |  |  |  |  |  |  |  |  |
Single-family residential |  | 264 |  |  | — |  |  | 797 |  |  | 207 |  |  | — |  |  | 1,268 |
HELOCs |  | 333 |  |  | — |  |  | 49 |  |  | — |  |  | — |  |  | 382 |
Total consumer lending |  | 597 |  |  | — |  |  | 846 |  |  | 207 |  |  | — |  |  | 1,650 |
Total |  | $ | 57,729 |  |  | $ | — |  |  | $ | 6,722 |  |  | $ | 237 |  |  | $ | 1,074 |  |  | $ | 65,762 |
($ in thousands) |  | Modification Type During the Year Ended December 31, 2015
| Principal (1) |  | Principal and Interest (2) |  | Interest Rate Reduction |  | Interest Deferments |  | Other |  | Total
Commercial lending: |  |  |  |  |  |  |  |  |  |  |  |
C&I |  | $ | 16,364 |  |  | $ | 17,801 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 34,165 |
CRE |  | 548 |  |  | 787 |  |  | — |  |  | — |  |  | 392 |  |  | 1,727 |
Construction and land |  | — |  |  | — |  |  | — |  |  | — |  |  | 83 |  |  | 83 |
Total commercial lending |  | 16,912 |  |  | 18,588 |  |  | — |  |  | — |  |  | 475 |  |  | 35,975 |
Consumer lending: |  |  |  |  |  |  |  |  |  |  |  |
Single-family residential |  | 279 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 279 |
Total consumer lending |  | 279 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 279 |
Total |  | $ | 17,191 |  |  | $ | 18,588 |  |  | $ | — |  |  | $ | — |  |  | $ | 475 |  |  | $ | 36,254 |
(1) | Includes forbearance payments, term extensions and principal deferments that modify the terms of the loan from principal and interest payments to interest payments only.
(2) | Includes principal and interest deferments or reductions.
The following table presents information on loans modified as TDRs within the previous 12 months that have subsequently defaulted during the years ended December 31, 2017, 2016 and 2015, and were still in default at the respective period end:
($ in thousands) |  | Loans Modified as TDRs that Subsequently Defaulted During the Year Ended December 31,
| 2017 |  | 2016 |  | 2015
| Number of Loans |  | Recorded Investment |  | Number of Loans |  | Recorded Investment |  | Number of Loans |  | Recorded Investment
Commercial lending: |  |  |  |  |  |  |  |  |  |  |  |
C&I |  | 3 |  |  | $ | 8,659 |  |  | — |  |  | $ | — |  |  | — |  |  | $ | — |
CRE |  | — |  |  | $ | — |  |  | 2 |  |  | $ | 3,150 |  |  | — |  |  | $ | — |
Construction and land |  | — |  |  | $ | — |  |  | 1 |  |  | $ | 4,883 |  |  | — |  |  | $ | — |
Consumer lending: |  |  |  |  |  |  |  |  |  |  |  |
Single-family residential |  | — |  |  | $ | — |  |  | — |  |  | $ | — |  |  | 1 |  |  | $ | 279 |
Summary of non-PCI impaired loans | The following tables present information on non-PCI impaired loans as of December 31, 2017 and 2016:
($ in thousands) |  | December 31, 2017
| Unpaid Principal Balance |  | Recorded Investment With No Allowance |  | Recorded Investment With Allowance |  | Total Recorded Investment |  | Related Allowance
Commercial lending: |  |  |  |  |  |  |  |  |  |
C&I |  | $ | 98,889 |  |  | $ | 36,086 |  |  | $ | 62,599 |  |  | $ | 98,685 |  |  | $ | 16,094 |
CRE |  | 35,550 |  |  | 28,699 |  |  | 6,857 |  |  | 35,556 |  |  | 684 |
Multifamily residential |  | 10,625 |  |  | 8,019 |  |  | 2,617 |  |  | 10,636 |  |  | 88 |
Construction and land |  | 3,973 |  |  | 3,973 |  |  | — |  |  | 3,973 |  |  | — |
Total commercial lending |  | 149,037 |  |  | 76,777 |  |  | 72,073 |  |  | 148,850 |  |  | 16,866 |
Consumer lending: |  |  |  |  |  |  |  |  |  |
Single-family residential |  | 14,287 |  |  | — |  |  | 14,338 |  |  | 14,338 |  |  | 534 |
HELOCs |  | 5,201 |  |  | 2,287 |  |  | 2,921 |  |  | 5,208 |  |  | 4 |
Other consumer |  | 2,491 |  |  | — |  |  | 2,491 |  |  | 2,491 |  |  | 2,491 |
Total consumer lending |  | 21,979 |  |  | 2,287 |  |  | 19,750 |  |  | 22,037 |  |  | 3,029 |
Total non-PCI impaired loans |  | $ | 171,016 |  |  | $ | 79,064 |  |  | $ | 91,823 |  |  | $ | 170,887 |  |  | $ | 19,895 |
($ in thousands) |  | December 31, 2016
| Unpaid Principal Balance |  | Recorded Investment With No Allowance |  | Recorded Investment With Allowance |  | Total Recorded Investment |  | Related Allowance
Commercial lending: |  |  |  |  |  |  |  |  |  |
C&I |  | $ | 167,466 |  |  | $ | 78,316 |  |  | $ | 47,303 |  |  | $ | 125,619 |  |  | $ | 10,477 |
CRE |  | 50,718 |  |  | 32,507 |  |  | 14,001 |  |  | 46,508 |  |  | 1,263 |
Multifamily residential |  | 11,181 |  |  | 5,684 |  |  | 4,357 |  |  | 10,041 |  |  | 180 |
Construction and land |  | 6,457 |  |  | 5,427 |  |  | 443 |  |  | 5,870 |  |  | 63 |
Total commercial lending |  | 235,822 |  |  | 121,934 |  |  | 66,104 |  |  | 188,038 |  |  | 11,983 |
Consumer lending: |  |  |  |  |  |  |  |  |  |
Single-family residential |  | 15,435 |  |  | — |  |  | 14,335 |  |  | 14,335 |  |  | 687 |
HELOCs |  | 4,016 |  |  | — |  |  | 3,682 |  |  | 3,682 |  |  | 31 |
Total consumer lending |  | 19,451 |  |  | — |  |  | 18,017 |  |  | 18,017 |  |  | 718 |
Total non-PCI impaired loans |  | $ | 255,273 |  |  | $ | 121,934 |  |  | $ | 84,121 |  |  | $ | 206,055 |  |  | $ | 12,701 |
Schedule of average recorded investment and amount of interest income on non-PCI impaired loans | The following table presents the average recorded investment and interest income recognized on non-PCI impaired loans for the years ended December 31, 2017, 2016 and 2015:
($ in thousands) |  | Year Ended December 31,
| 2017 |  | 2016 |  | 2015
| Average Recorded Investment |  | Recognized Interest Income (1) |  | Average Recorded Investment |  | Recognized Interest Income (1) |  | Average Recorded Investment |  | Recognized Interest Income (1)
Commercial lending: |  |  |  |  |  |  |  |  |  |  |  |
C&I |  | $ | 110,662 |  |  | $ | 1,517 |  |  | $ | 148,986 |  |  | $ | 2,612 |  |  | $ | 85,290 |  |  | $ | 538 |
CRE |  | 36,003 |  |  | 578 |  |  | 47,064 |  |  | 1,253 |  |  | 43,598 |  |  | 536 |
Multifamily residential |  | 11,455 |  |  | 422 |  |  | 15,763 |  |  | 302 |  |  | 24,024 |  |  | 312 |
Construction and land |  | 4,382 |  |  | — |  |  | 6,388 |  |  | 34 |  |  | 2,740 |  |  | 39 |
Total commercial lending |  | 162,502 |  |  | 2,517 |  |  | 218,201 |  |  | 4,201 |  |  | 155,652 |  |  | 1,425 |
Consumer lending: |  |  |  |  |  |  |  |  |  |  |  |
Single-family residential |  | 14,994 |  |  | 417 |  |  | 14,323 |  |  | 447 |  |  | 15,365 |  |  | 242 |
HELOCs |  | 5,494 |  |  | 55 |  |  | 3,703 |  |  | 63 |  |  | 1,252 |  |  | 47 |
Other consumer |  | 2,142 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Total consumer lending |  | 22,630 |  |  | 472 |  |  | 18,026 |  |  | 510 |  |  | 16,617 |  |  | 289 |
Total non-PCI impaired loans |  | $ | 185,132 |  |  | $ | 2,989 |  |  | $ | 236,227 |  |  | $ | 4,711 |  |  | $ | 172,269 |  |  | $ | 1,714 |
(1) | Includes interest recognized on accruing non-PCI TDRs. Interest payments received on nonaccrual non-PCI loans are reflected as a reduction to principal, not as interest income.
Summary of the activity in the allowance for credit losses | The following table presents a summary of activities in the allowance for unfunded credit reserves for the years ended December 31, 2017, 2016 and 2015:
($ in thousands) |  | Year Ended December 31,
| 2017 |  | 2016 |  | 2015
Allowance for unfunded credit reserves, beginning of period |  | $ | 16,121 |  |  | $ | 20,360 |  |  | $ | 12,712 |
(Reversal of) provision for unfunded credit reserves |  | (2,803 | ) |  | (4,239 | ) |  | 7,648 |
Allowance for unfunded credit reserves, end of period |  | $ | 13,318 |  |  | $ | 16,121 |  |  | $ | 20,360 |
The following table presents a summary of activities in the allowance for loan losses by portfolio segment for the years ended December 31, 2017, 2016 and 2015:
($ in thousands) |  | Year Ended December 31,
| 2017 |  | 2016 |  | 2015
Non-PCI Loans |  |  |  |  |  |
Allowance for non-PCI loans, beginning of period |  | $ | 260,402 |  |  | $ | 264,600 |  |  | $ | 260,965 |
Provision for loan losses on non-PCI loans |  | 49,129 |  |  | 31,959 |  |  | 6,924 |
Gross charge-offs: |  |  |  |  |  |
Commercial lending: |  |  |  |  |  |
C&I |  | (38,118 | ) |  | (47,739 | ) |  | (20,423 | )
CRE |  | — |  |  | (464 | ) |  | (1,052 | )
Multifamily residential |  | (635 | ) |  | (29 | ) |  | (1,650 | )
Construction and land |  | (149 | ) |  | (117 | ) |  | (493 | )
Consumer lending: |  |  |  |  |  |
Single-family residential |  | (1 | ) |  | (137 | ) |  | (36 | )
HELOCs |  | (55 | ) |  | (9 | ) |  | (98 | )
Other consumer |  | (17 | ) |  | (13 | ) |  | (502 | )
Total gross charge-offs |  | (38,975 | ) |  | (48,508 | ) |  | (24,254 | )
Gross recoveries: |  |  |  |  |  |
Commercial lending: |  |  |  |  |  |
C&I |  | 12,065 |  |  | 8,453 |  |  | 8,782 |
CRE |  | 2,111 |  |  | 1,488 |  |  | 2,488 |
Multifamily residential |  | 1,357 |  |  | 1,476 |  |  | 4,298 |
Construction and land |  | 259 |  |  | 203 |  |  | 4,647 |
Consumer lending: |  |  |  |  |  |
Single-family residential |  | 546 |  |  | 401 |  |  | 323 |
HELOCs |  | 24 |  |  | 7 |  |  | 54 |
Other consumer |  | 152 |  |  | 323 |  |  | 373 |
Total gross recoveries |  | 16,514 |  |  | 12,351 |  |  | 20,965 |
Net charge-offs |  | (22,461 | ) |  | (36,157 | ) |  | (3,289 | )
Allowance for non-PCI loans, end of period |  | 287,070 |  |  | 260,402 |  |  | 264,600 |
PCI Loans |  |  |  |  |  |
Allowance for PCI loans, beginning of period |  | 118 |  |  | 359 |  |  | 714 |
Reversal of loan losses on PCI loans |  | (60 | ) |  | (241 | ) |  | (355 | )
Allowance for PCI loans, end of period |  | 58 |  |  | 118 |  |  | 359 |
Allowance for loan losses |  | $ | 287,128 |  |  | $ | 260,520 |  |  | $ | 264,959 |
Allowance for loan losses and recorded investments by portfolio segment and impairment methodology | The following tables present the Company’s allowance for loan losses and recorded investments by portfolio segment and impairment methodology as of December 31, 2017 and 2016:
($ in thousands) |  | December 31, 2017
| Commercial Lending |  | Consumer Lending |  |
| C&I |  | CRE |  | Multifamily Residential |  | Construction and Land |  | Single-Family Residential |  | HELOCs |  | Other Consumer |  | Total
Allowance for loan losses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | 16,094 |  |  | $ | 684 |  |  | $ | 88 |  |  | $ | — |  |  | $ | 534 |  |  | $ | 4 |  |  | $ | 2,491 |  |  | $ | 19,895 |
Collectively evaluated for impairment |  | 146,964 |  |  | 40,495 |  |  | 19,021 |  |  | 26,881 |  |  | 25,828 |  |  | 7,350 |  |  | 636 |  |  | 267,175 |
Acquired with deteriorated credit quality |  | — |  |  | 58 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 58 |
Total |  | $ | 163,058 |  |  | $ | 41,237 |  |  | $ | 19,109 |  |  | $ | 26,881 |  |  | $ | 26,362 |  |  | $ | 7,354 |  |  | $ | 3,127 |  |  | $ | 287,128 |
Recorded investment in loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | 98,685 |  |  | $ | 35,556 |  |  | $ | 10,636 |  |  | $ | 3,973 |  |  | $ | 14,338 |  |  | $ | 5,208 |  |  | $ | 2,491 |  |  | $ | 170,887 |
Collectively evaluated for impairment |  | 10,586,751 |  |  | 8,623,653 |  |  | 1,844,492 |  |  | 655,353 |  |  | 4,514,573 |  |  | 1,763,709 |  |  | 334,013 |  |  | 28,322,544 |
Acquired with deteriorated credit quality (1) |  | 11,795 |  |  | 277,688 |  |  | 61,048 |  |  | 371 |  |  | 117,378 |  |  | 14,007 |  |  | — |  |  | 482,287 |
Total (1) |  | $ | 10,697,231 |  |  | $ | 8,936,897 |  |  | $ | 1,916,176 |  |  | $ | 659,697 |  |  | $ | 4,646,289 |  |  | $ | 1,782,924 |  |  | $ | 336,504 |  |  | $ | 28,975,718 |
($ in thousands) |  | December 31, 2016
| Commercial Lending |  | Consumer Lending |  |
| C&I |  | CRE |  | Multifamily Residential |  | Construction and Land |  | Single-Family Residential |  | HELOCs |  | Other Consumer |  | Total
Allowance for loan losses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | 10,477 |  |  | $ | 1,263 |  |  | $ | 180 |  |  | $ | 63 |  |  | $ | 687 |  |  | $ | 31 |  |  | $ | — |  |  | $ | 12,701 |
Collectively evaluated for impairment |  | 131,689 |  |  | 46,552 |  |  | 17,363 |  |  | 24,926 |  |  | 19,103 |  |  | 7,475 |  |  | 593 |  |  | 247,701 |
Acquired with deteriorated credit quality |  | 1 |  |  | 112 |  |  | — |  |  | — |  |  | 5 |  |  | — |  |  | — |  |  | 118 |
Total |  | $ | 142,167 |  |  | $ | 47,927 |  |  | $ | 17,543 |  |  | $ | 24,989 |  |  | $ | 19,795 |  |  | $ | 7,506 |  |  | $ | 593 |  |  | $ | 260,520 |
Recorded investment in loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  | $ | 125,619 |  |  | $ | 46,508 |  |  | $ | 10,041 |  |  | $ | 5,870 |  |  | $ | 14,335 |  |  | $ | 3,682 |  |  | $ | — |  |  | $ | 206,055 |
Collectively evaluated for impairment |  | 9,476,557 |  |  | 7,621,153 |  |  | 1,480,244 |  |  | 666,966 |  |  | 3,356,334 |  |  | 1,738,170 |  |  | 315,215 |  |  | 24,654,639 |
Acquired with deteriorated credit quality (1) |  | 38,387 |  |  | 348,448 |  |  | 95,654 |  |  | 1,918 |  |  | 139,110 |  |  | 18,924 |  |  | 4 |  |  | 642,445 |
Total (1) |  | $ | 9,640,563 |  |  | $ | 8,016,109 |  |  | $ | 1,585,939 |  |  | $ | 674,754 |  |  | $ | 3,509,779 |  |  | $ | 1,760,776 |  |  | $ | 315,219 |  |  | $ | 25,503,139 |
(1) | Loans net of ASC 310-30 discount
Summary of changes in the accretable yield for the PCI loans | The following table presents the changes in accretable yield for PCI loans for the years ended December 31, 2017, 2016 and 2015:
($ in thousands) |  | Year Ended December 31,
| 2017 |  | 2016 |  | 2015
Accretable yield for PCI loans, beginning of period |  | $ | 136,247 |  |  | $ | 214,907 |  |  | $ | 311,688 |
Accretion |  | (42,487 | ) |  | (68,708 | ) |  | (107,442 | )
Changes in expected cash flows |  | 8,217 |  |  | (9,952 | ) |  | 10,661 |
Accretable yield for PCI loans, end of period |  | $ | 101,977 |  |  | $ | 136,247 |  |  | $ | 214,907 |
Schedule of loans held-for-investment | The following tables present information about the sales, purchases and securitization of loans, and reclassification of loans held-for-investment to/from loans held-for-sale during the years ended December 31, 2017, 2016 and 2015:
($ in thousands) |  | Year Ended December 31, 2017
| Commercial Lending |  | Consumer Lending |  |  |
| C&I |  | CRE |  | Multifamily Residential |  | Construction and Land |  | Single-Family Residential |  | HELOCs |  | Other Consumer |  | Total
Loans transferred from held-for-investment to held-for-sale |  | $ | 476,644 |  |  | $ | 52,217 |  |  | $ | 531 |  |  | $ | 1,609 |  |  | $ | 249 |  |  | $ | — |  |  | $ | 3,706 |  |  | $ | 534,956 |  | (1)
Loans of DCB branches transferred from held-for-investment to held-for-sale (included in Branch assets held-for-sale) |  | $ | 17,590 |  |  | $ | 36,783 |  |  | $ | 12,448 |  |  | $ | 241 |  |  | $ | 6,416 |  |  | $ | 4,309 |  |  | $ | 345 |  |  | $ | 78,132 |  | (1)
Sales |  | $ | 476,644 |  |  | $ | 52,217 |  |  | $ | 531 |  |  | $ | 1,609 |  |  | $ | 21,058 |  |  | $ | — |  |  | $ | 25,905 |  |  | $ | 577,964 |  | (2)(3)(4)
Purchases |  | $ | 503,359 |  |  | $ | — |  |  | $ | 2,311 |  |  | $ | — |  |  | $ | 29,060 |  |  | $ | — |  |  | $ | — |  |  | $ | 534,730 |  | (6)
($ in thousands) |  | Year Ended December 31, 2016
| Commercial Lending |  | Consumer Lending |  |  |
| C&I |  | CRE |  | Multifamily Residential |  | Construction and Land |  | Single-Family Residential |  | HELOCs |  | Other Consumer |  | Total
Loans transferred from held-for-investment to held-for-sale |  | $ | 434,137 |  |  | $ | 110,927 |  |  | $ | 269,791 |  |  | $ | 4,245 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 819,100 |  | (1)
Loans transferred from held-for-sale to held-for-investment |  | $ | — |  |  | $ | — |  |  | $ | (4,943 | ) |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | (4,943 | ) |
Sales |  | $ | 434,137 |  |  | $ | 110,927 |  |  | $ | 61,268 |  |  | $ | 4,245 |  |  | $ | 18,092 |  |  | $ | — |  |  | $ | — |  |  | $ | 628,669 |  | (2)(3)(4)
Securitization of loans held-for-investment |  | $ | — |  |  | $ | — |  |  | $ | 201,675 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 201,675 |  | (5)
Purchases |  | $ | 646,793 |  |  | $ | — |  |  | $ | 5,658 |  |  | $ | — |  |  | $ | 488,577 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,141,028 |  | (6)(7)
($ in thousands) |  | Year Ended December 31, 2015
| Commercial Lending |  | Consumer Lending |  |  |
| C&I |  | CRE |  | Multifamily Residential |  | Construction and Land |  | Single-Family Residential |  | HELOCs |  | Other Consumer |  | Total
Loans transferred from held-for-investment to held-for-sale |  | $ | 779,854 |  |  | $ | 227 |  |  | $ | — |  |  | $ | 4,754 |  |  | $ | 962,538 |  |  | $ | 248 |  |  | $ | — |  |  | $ | 1,747,621 |  | (1)
Loans transferred from held-for-sale to held-for-investment |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | (53,376 | ) |  | $ | — |  |  | $ | — |  |  | $ | (53,376 | ) |
Sales |  | $ | 779,682 |  |  | $ | 227 |  |  | $ | — |  |  | $ | 4,754 |  |  | $ | 907,373 |  |  | $ | 248 |  |  | $ | 9,913 |  |  | $ | 1,702,197 |  | (2)(3)(4)
Purchases |  | $ | 233,090 |  |  | $ | — |  |  | $ | 11,046 |  |  | $ | — |  |  | $ | 38,271 |  |  | $ | — |  |  | $ | — |  |  | $ | 282,407 |  | (6)
(1) | The Company recorded $473 thousand, $1.9 million and $5.1 million in write-downs to the allowance for loan losses related to loans transferred from held-for-investment to held-for-sale for the years ended December 31, 2017, 2016 and 2015, respectively.
(2) | Includes originated loans sold of $178.2 million, $369.6 million and $1.04 billion for the years ended December 31, 2017, 2016 and 2015, respectively. Originated loans sold were primarily comprised of C&I, CRE and single-family residential loans for the year ended December 31, 2017, C&I, CRE and multifamily residential loans for the year ended December 31, 2016, and single-family residential and C&I loans for the year ended December 31, 2015.
(3) | Includes purchased loans sold in the secondary market of $399.8 million, $259.1 million and $661.9 million for the years ended December 31, 2017, 2016 and 2015, respectively.
(4) | Net gains on sales of loans, excluding the lower of cost or fair value adjustments, were $8.9 million, $10.6 million and $27.8 million for the years ended December 31, 2017, 2016 and 2015, respectively. The lower of cost or fair value adjustments of $61 thousand, $5.6 million and $3.0 million for the years ended December 31, 2017, 2016 and 2015, respectively, were recorded in Net gains on sales of loans on the Consolidated Statement of Income.
(5) | Represents multifamily residential loans securitized during the first quarter of 2016 that resulted in net gains of $1.1 million, $641 thousand in mortgage servicing rights and $160.1 million of held-to-maturity investment security.
(6) | C&I loan purchases for each of the years ended December 31, 2017, 2016 and 2015 mainly represent C&I syndicated loans.
(7) | The higher loan purchases for the year ended December 31, 2016 was mainly due to $488.3 million of single-family residential loans purchased for Community Reinvestment Act (“CRA”) purposes.

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- Definition Tabular disclosure of financing receivables that are past due but not impaired, financing receivables that are 90 days past due and still accruing, and financing receivables on nonaccrual status. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524 + Details
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- Definition Tabular disclosure of the activity in the total allowance for credit losses related to financing receivables (such as loans or lease receivables) for entities that have an unclassified balance sheet, including the balance in the allowance at the beginning and end of each period, additions charged to operations, direct write-downs charged against the allowance, and recoveries of amounts previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Tabular disclosure of financing receivables and troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953682-111524 + Details
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