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Loans (Tables) | 6 Months Ended
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Jun. 30, 2018
Financing Receivable, Recorded Investment [Line Items] |
Analysis of Loan Portfolio by Major Types of Loans | The following is an analysis of the loan portfolio by segment (net of unearned income):
|  | June 30, 2018 |  | December 31, 2017
|  | Loans, excluding PCI loans |  | PCI Loans |  | Total |  | Loans, excluding PCI loans |  | PCI Loans |  | Total
|  | (in thousands)
Commercial business |  | $ | 3,538,492 |  |  | $ | 12,258 |  |  | $ | 3,550,750 |  |  | $ | 3,377,324 |  |  | $ | 12,628 |  |  | $ | 3,389,952 |
Real estate: |  |  |  |  |  |  |  |  |  |  |  |
One-to-four family residential |  | 180,522 |  |  | 10,200 |  |  | 190,722 |  |  | 188,396 |  |  | 12,395 |  |  | 200,791 |
Commercial and multifamily residential |  | 3,758,207 |  |  | 68,299 |  |  | 3,826,506 |  |  | 3,825,739 |  |  | 75,594 |  |  | 3,901,333 |
Total real estate |  | 3,938,729 |  |  | 78,499 |  |  | 4,017,228 |  |  | 4,014,135 |  |  | 87,989 |  |  | 4,102,124 |
Real estate construction: |  |  |  |  |  |  |  |  |  |  |  |
One-to-four family residential |  | 206,181 |  |  | 165 |  |  | 206,346 |  |  | 200,518 |  |  | 177 |  |  | 200,695 |
Commercial and multifamily residential |  | 387,951 |  |  | 571 |  |  | 388,522 |  |  | 371,931 |  |  | 607 |  |  | 372,538 |
Total real estate construction |  | 594,132 |  |  | 736 |  |  | 594,868 |  |  | 572,449 |  |  | 784 |  |  | 573,233 |
Consumer |  | 326,402 |  |  | 10,289 |  |  | 336,691 |  |  | 334,190 |  |  | 11,269 |  |  | 345,459 |
Less: Net unearned income |  | (45,430 | ) |  | — |  |  | (45,430 | ) |  | (52,111 | ) |  | — |  |  | (52,111 | )
Total loans, net of unearned income |  | 8,352,325 |  |  | 101,782 |  |  | 8,454,107 |  |  | 8,245,987 |  |  | 112,670 |  |  | 8,358,657 |
Less: Allowance for loan and lease losses |  | (75,368 | ) |  | (4,782 | ) |  | (80,150 | ) |  | (68,739 | ) |  | (6,907 | ) |  | (75,646 | )
Total loans, net |  | $ | 8,276,957 |  |  | $ | 97,000 |  |  | $ | 8,373,957 |  |  | $ | 8,177,248 |  |  | $ | 105,763 |  |  | $ | 8,283,011 |
Loans held for sale |  | $ | 6,773 |  |  | $ | — |  |  | $ | 6,773 |  |  | $ | 5,766 |  |  | $ | — |  |  | $ | 5,766 |
Loans, Excluding Purchased Credit Impaired Loans [Member] |
Financing Receivable, Recorded Investment [Line Items] |
Analysis of Nonaccrual Loans | The following is an analysis of nonaccrual loans as of June 30, 2018 and December 31, 2017:
|  | June 30, 2018 |  | December 31, 2017
|  | Recorded Investment Nonaccrual Loans |  | Unpaid Principal Balance Nonaccrual Loans |  | Recorded Investment Nonaccrual Loans |  | Unpaid Principal Balance Nonaccrual Loans
|  | (in thousands)
Commercial business: |  |  |  |  |  |  |  |
Secured |  | $ | 52,006 |  |  | $ | 68,552 |  |  | $ | 45,410 |  |  | $ | 56,865 |
Unsecured |  | 30 |  |  | 30 |  |  | 50 |  |  | 49 |
Real estate: |  |  |  |  |  |  |  |
One-to-four family residential |  | 976 |  |  | 1,356 |  |  | 785 |  |  | 1,182 |
Commercial & multifamily residential: |  |  |  |  |  |  |  |
Commercial land |  | 2,603 |  |  | 2,618 |  |  | 2,628 |  |  | 2,623 |
Income property |  | 1,552 |  |  | 1,808 |  |  | 4,284 |  |  | 5,410 |
Owner occupied |  | 6,963 |  |  | 7,290 |  |  | 7,029 |  |  | 7,270 |
Real estate construction: |  |  |  |  |  |  |  |
One-to-four family residential: |  |  |  |  |  |  |  |
Land and acquisition |  | 318 |  |  | 318 |  |  | 25 |  |  | 26 |
Residential construction |  | 71 |  |  | 71 |  |  | 1,829 |  |  | 1,828 |
Consumer |  | 4,985 |  |  | 5,368 |  |  | 4,149 |  |  | 4,633 |
Total |  | $ | 69,504 |  |  | $ | 87,411 |  |  | $ | 66,189 |  |  | $ | 79,886 |
Analysis of the Aged Loan Portfolio | The following is an aging of the recorded investment of the loan portfolio as of June 30, 2018 and December 31, 2017:
|  | Current Loans |  | 30 - 59 Days Past Due |  | 60 - 89 Days Past Due |  | Greater than 90 Days Past Due |  | Total Past Due |  | Nonaccrual Loans |  | Total Loans
June 30, 2018 |  | (in thousands)
Commercial business: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured |  | $ | 3,342,422 |  |  | $ | 9,542 |  |  | $ | 3,449 |  |  | $ | — |  |  | $ | 12,991 |  |  | $ | 52,006 |  |  | $ | 3,407,419 |
Unsecured |  | 114,190 |  |  | 1,622 |  |  | 492 |  |  | — |  |  | 2,114 |  |  | 30 |  |  | 116,334 |
Real estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |
One-to-four family residential |  | 176,917 |  |  | 746 |  |  | 175 |  |  | — |  |  | 921 |  |  | 976 |  |  | 178,814 |
Commercial & multifamily residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial land |  | 279,067 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2,603 |  |  | 281,670 |
Income property |  | 1,848,626 |  |  | 1,170 |  |  | 102 |  |  | — |  |  | 1,272 |  |  | 1,552 |  |  | 1,851,450 |
Owner occupied |  | 1,589,500 |  |  | 6,695 |  |  | 584 |  |  | — |  |  | 7,279 |  |  | 6,963 |  |  | 1,603,742 |
Real estate construction: |  |  |  |  |  |  |  |  |  |  |  |  |  |
One-to-four family residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land and acquisition |  | 6,252 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 318 |  |  | 6,570 |
Residential construction |  | 197,359 |  |  | 1,243 |  |  | — |  |  | — |  |  | 1,243 |  |  | 71 |  |  | 198,673 |
Commercial & multifamily residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income property |  | 297,215 |  |  | 5,586 |  |  | — |  |  | — |  |  | 5,586 |  |  | — |  |  | 302,801 |
Owner occupied |  | 79,694 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 79,694 |
Consumer |  | 317,985 |  |  | 1,339 |  |  | 849 |  |  | — |  |  | 2,188 |  |  | 4,985 |  |  | 325,158 |
Total |  | $ | 8,249,227 |  |  | $ | 27,943 |  |  | $ | 5,651 |  |  | $ | — |  |  | $ | 33,594 |  |  | $ | 69,504 |  |  | $ | 8,352,325 |
|  | Current Loans |  | 30 - 59 Days Past Due |  | 60 - 89 Days Past Due |  | Greater than 90 Days Past Due |  | Total Past Due |  | Nonaccrual Loans |  | Total Loans
December 31, 2017 |  | (in thousands)
Commercial business: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured |  | $ | 3,185,321 |  |  | $ | 2,530 |  |  | $ | 2,400 |  |  | $ | — |  |  | $ | 4,930 |  |  | $ | 45,410 |  |  | $ | 3,235,661 |
Unsecured |  | 123,524 |  |  | 100 |  |  | 501 |  |  | — |  |  | 601 |  |  | 50 |  |  | 124,175 |
Real estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |
One-to-four family residential |  | 184,256 |  |  | 1,111 |  |  | 402 |  |  | — |  |  | 1,513 |  |  | 785 |  |  | 186,554 |
Commercial & multifamily residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial land |  | 292,680 |  |  | 92 |  |  | — |  |  | 581 |  |  | 673 |  |  | 2,628 |  |  | 295,981 |
Income property |  | 1,898,655 |  |  | 2,426 |  |  | 971 |  |  | — |  |  | 3,397 |  |  | 4,284 |  |  | 1,906,336 |
Owner occupied |  | 1,590,004 |  |  | 2,485 |  |  | 468 |  |  | — |  |  | 2,953 |  |  | 7,029 |  |  | 1,599,986 |
Real estate construction: |  |  |  |  |  |  |  |  |  |  |  |  |  |
One-to-four family residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land and acquisition |  | 9,882 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 25 |  |  | 9,907 |
Residential construction |  | 187,862 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 1,829 |  |  | 189,691 |
Commercial & multifamily residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income property |  | 293,028 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 293,028 |
Owner occupied |  | 72,443 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 72,443 |
Consumer |  | 325,928 |  |  | 1,446 |  |  | 702 |  |  | — |  |  | 2,148 |  |  | 4,149 |  |  | 332,225 |
Total |  | $ | 8,163,583 |  |  | $ | 10,190 |  |  | $ | 5,444 |  |  | $ | 581 |  |  | $ | 16,215 |  |  | $ | 66,189 |  |  | $ | 8,245,987 |
Impaired Financing Receivables | The following is an analysis of impaired loans as of June 30, 2018 and December 31, 2017:
|  | Recorded Investment of Loans Collectively Measured for Contingency Provision |  | Recorded Investment of Loans Individually Measured for Specific Impairment |  | Impaired Loans With Recorded Allowance |  | Impaired Loans Without Recorded Allowance
|  | Recorded Investment |  | Unpaid Principal Balance |  | Related Allowance |  | Recorded Investment |  | Unpaid Principal Balance
June 30, 2018 |  | (in thousands)
Commercial business: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured |  | $ | 3,360,586 |  |  | $ | 46,833 |  |  | $ | 2,731 |  |  | $ | 3,120 |  |  | $ | 67 |  |  | $ | 44,102 |  |  | $ | 53,050 |
Unsecured |  | 115,468 |  |  | 866 |  |  | — |  |  | — |  |  | — |  |  | 866 |  |  | 4,906 |
Real estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |
One-to-four family residential |  | 178,121 |  |  | 693 |  |  | 346 |  |  | 742 |  |  | 8 |  |  | 347 |  |  | 809 |
Commercial & multifamily residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial land |  | 279,408 |  |  | 2,262 |  |  | — |  |  | — |  |  | — |  |  | 2,262 |  |  | 2,277 |
Income property |  | 1,849,318 |  |  | 2,132 |  |  | — |  |  | — |  |  | — |  |  | 2,132 |  |  | 2,195 |
Owner occupied |  | 1,594,762 |  |  | 8,980 |  |  | 3,299 |  |  | 4,717 |  |  | 86 |  |  | 5,681 |  |  | 5,858 |
Real estate construction: |  |  |  |  |  |  |  |  |  |  |  |  |  |
One-to-four family residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land and acquisition |  | 6,570 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Residential construction |  | 198,673 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Commercial & multifamily residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income property |  | 302,801 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Owner occupied |  | 75,644 |  |  | 4,050 |  |  | — |  |  | — |  |  | — |  |  | 4,050 |  |  | 4,050 |
Consumer |  | 318,608 |  |  | 6,550 |  |  | 5,302 |  |  | 5,590 |  |  | 95 |  |  | 1,248 |  |  | 1,319 |
Total |  | $ | 8,279,959 |  |  | $ | 72,366 |  |  | $ | 11,678 |  |  | $ | 14,169 |  |  | $ | 256 |  |  | $ | 60,688 |  |  | $ | 74,464 |
|  | Recorded Investment of Loans Collectively Measured for Contingency Provision |  | Recorded Investment of Loans Individually Measured for Specific Impairment |  | Impaired Loans With Recorded Allowance |  | Impaired Loans Without Recorded Allowance
|  |  |  | Recorded Investment |  | Unpaid Principal Balance |  | Related Allowance |  | Recorded Investment |  | Unpaid Principal Balance
December 31, 2017 |  | (in thousands)
Commercial business: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured |  | $ | 3,195,649 |  |  | $ | 40,012 |  |  | $ | 3,808 |  |  | $ | 3,937 |  |  | $ | 1,867 |  |  | $ | 36,204 |  |  | $ | 42,314 |
Unsecured |  | 124,150 |  |  | 25 |  |  | 25 |  |  | 24 |  |  | 3 |  |  | — |  |  | — |
Real estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |
One-to-four family residential |  | 185,659 |  |  | 895 |  |  | 867 |  |  | 1,408 |  |  | 103 |  |  | 28 |  |  | 337 |
Commercial & multifamily residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial land |  | 293,694 |  |  | 2,287 |  |  | — |  |  | — |  |  | — |  |  | 2,287 |  |  | 2,282 |
Income property |  | 1,901,313 |  |  | 5,023 |  |  | 2,768 |  |  | 3,328 |  |  | 185 |  |  | 2,255 |  |  | 2,601 |
Owner occupied |  | 1,591,298 |  |  | 8,688 |  |  | 77 |  |  | 80 |  |  | 3 |  |  | 8,611 |  |  | 10,077 |
Real estate construction: |  |  |  |  |  |  |  |  |  |  |  |  |  |
One-to-four family residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land and acquisition |  | 9,907 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Residential construction |  | 188,481 |  |  | 1,210 |  |  | — |  |  | — |  |  | — |  |  | 1,210 |  |  | 1,210 |
Commercial & multifamily residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income property |  | 293,028 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Owner occupied |  | 68,393 |  |  | 4,050 |  |  | — |  |  | — |  |  | — |  |  | 4,050 |  |  | 4,050 |
Consumer |  | 325,210 |  |  | 7,015 |  |  | 5,303 |  |  | 5,568 |  |  | 199 |  |  | 1,712 |  |  | 1,864 |
Total |  | $ | 8,176,782 |  |  | $ | 69,205 |  |  | $ | 12,848 |  |  | $ | 14,345 |  |  | $ | 2,360 |  |  | $ | 56,357 |  |  | $ | 64,735 |
The following table provides additional information on impaired loans for the three and six month periods indicated:
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
|  | Average Recorded Investment Impaired Loans |  | Interest Recognized on Impaired Loans |  | Average Recorded Investment Impaired Loans |  | Interest Recognized on Impaired Loans |  | Average Recorded Investment Impaired Loans |  | Interest Recognized on Impaired Loans |  | Average Recorded Investment Impaired Loans |  | Interest Recognized on Impaired Loans
|  | (in thousands)
Commercial business: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured |  | $ | 45,716 |  |  | $ | 85 |  |  | $ | 15,590 |  |  | $ | 50 |  |  | $ | 43,815 |  |  | $ | 97 |  |  | $ | 13,332 |  |  | $ | 69 |
Unsecured |  | 444 |  |  | 1 |  |  | — |  |  | — |  |  | 304 |  |  | 1 |  |  | — |  |  | — |
Real estate: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
One-to-four family residential |  | 780 |  |  | 12 |  |  | 648 |  |  | 21 |  |  | 818 |  |  | 18 |  |  | 608 |  |  | 22 |
Commercial & multifamily residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial land |  | 2,557 |  |  | — |  |  | 2,549 |  |  | — |  |  | 2,467 |  |  | — |  |  | 1,936 |  |  | — |
Income property |  | 2,846 |  |  | 32 |  |  | 3,676 |  |  | 7 |  |  | 3,572 |  |  | 62 |  |  | 3,925 |  |  | 6 |
Owner occupied |  | 8,768 |  |  | 124 |  |  | 3,453 |  |  | 192 |  |  | 8,741 |  |  | 209 |  |  | 4,107 |  |  | 192 |
Real estate construction: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
One-to-four family residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land and acquisition |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 5 |  |  | — |
Residential construction |  | 605 |  |  | — |  |  | — |  |  | — |  |  | 807 |  |  | — |  |  | 112 |  |  | — |
Commercial & multifamily residential: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Owner occupied |  | 4,050 |  |  | 51 |  |  | — |  |  | — |  |  | 4,050 |  |  | 102 |  |  | — |  |  | — |
Consumer |  | 6,391 |  |  | 34 |  |  | 5,584 |  |  | 31 |  |  | 6,599 |  |  | 77 |  |  | 5,461 |  |  | 57 |
Total |  | $ | 72,157 |  |  | $ | 339 |  |  | $ | 31,500 |  |  | $ | 301 |  |  | $ | 71,173 |  |  | $ | 566 |  |  | $ | 29,486 |  |  | $ | 346 |
Analysis of loans classified as Troubled Debt Restructurings (“TDR”) | The following is an analysis of loans classified as troubled debt restructurings (“TDR”) during the three and six months ended June 30, 2018 and 2017:
|  | Three months ended June 30, 2018 |  | Three months ended June 30, 2017
|  | Number of TDR Modifications |  | Pre-Modification Outstanding Recorded Investment |  | Post-Modification Outstanding Recorded Investment |  | Number of TDR Modifications |  | Pre-Modification Outstanding Recorded Investment |  | Post-Modification Outstanding Recorded Investment
|  | (dollars in thousands)
Commercial business: |  |  |  |  |  |  |  |  |  |  |  |
Secured |  | 7 |  |  | $ | 2,644 |  |  | $ | 2,644 |  |  | 2 |  |  | $ | 1,422 |  |  | $ | 1,422 |
Real estate: |  |  |  |  |  |  |  |  |  |  |  |
One-to-four family residential |  | — |  |  | — |  |  | — |  |  | 1 |  |  | 382 |  |  | 382 |
Consumer |  | 8 |  |  | 1,274 |  |  | 1,274 |  |  | 8 |  |  | 815 |  |  | 815 |
Total |  | 15 |  |  | $ | 3,918 |  |  | $ | 3,918 |  |  | 11 |  |  | $ | 2,619 |  |  | $ | 2,619 |
|  | Six months ended June 30, 2018 |  | Six months ended June 30, 2017
|  | Number of TDR Modifications |  | Pre-Modification Outstanding Recorded Investment |  | Post-Modification Outstanding Recorded Investment |  | Number of TDR Modifications |  | Pre-Modification Outstanding Recorded Investment |  | Post-Modification Outstanding Recorded Investment
|  | (dollars in thousands)
Commercial business: |  |  |  |  |  |  |  |  |  |  |  |
Secured |  | 8 |  |  | $ | 3,094 |  |  | $ | 3,094 |  |  | 5 |  |  | $ | 1,778 |  |  | $ | 1,778 |
Real estate: |  |  |  |  |  |  |  |  |  |  |  |
One-to-four family residential |  | — |  |  | — |  |  | — |  |  | 1 |  |  | 382 |  |  | 382 |
Commercial and multifamily residential: |  |  |  |  |  |  |  |  |  |  |  |
Income property |  | 1 |  |  | 891 |  |  | 891 |  |  | — |  |  | — |  |  | — |
Consumer |  | 15 |  |  | 2,417 |  |  | 2,417 |  |  | 18 |  |  | 2,361 |  |  | 2,361 |
Total |  | 24 |  |  | $ | 6,402 |  |  | $ | 6,402 |  |  | 24 |  |  | $ | 4,521 |  |  | $ | 4,521 |
Purchased Credit Impaired Loans [Member] |
Financing Receivable, Recorded Investment [Line Items] |
Analysis of Loan Portfolio by Major Types of Loans | The following is an analysis of our PCI loans, net of related allowance for losses and remaining valuation discounts as of June 30, 2018 and December 31, 2017:
|  | June 30, 2018 |  | December 31, 2017
|  | (in thousands)
Commercial business |  | $ | 12,921 |  |  | $ | 13,753 |
Real estate: |  |  |  |
One-to-four family residential |  | 12,202 |  |  | 14,610 |
Commercial and multifamily residential |  | 72,019 |  |  | 79,211 |
Total real estate |  | 84,221 |  |  | 93,821 |
Real estate construction: |  |  |  |
One-to-four family residential |  | 166 |  |  | 177 |
Commercial and multifamily residential |  | 557 |  |  | 595 |
Total real estate construction |  | 723 |  |  | 772 |
Consumer |  | 11,310 |  |  | 12,412 |
Subtotal of PCI loans |  | 109,175 |  |  | 120,758 |
Less: |  |  |  |
Valuation discount resulting from acquisition accounting |  | 7,393 |  |  | 8,088 |
Allowance for loan losses |  | 4,782 |  |  | 6,907 |
PCI loans, net of allowance for loan losses |  | $ | 97,000 |  |  | $ | 105,763 |
Changes in Accretable Yield for Acquired Loans | The following table shows the changes in accretable yield for PCI loans for the three and six months ended June 30, 2018 and 2017:
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
|  | (in thousands)
Balance at beginning of period |  | $ | 29,355 |  |  | $ | 38,444 |  |  | $ | 31,176 |  |  | $ | 45,191 |
Accretion |  | (1,937 | ) |  | (2,882 | ) |  | (4,202 | ) |  | (7,064 | )
Disposals |  | (7 | ) |  | — |  |  | (166 | ) |  | (158 | )
Reclassifications from (to) nonaccretable difference |  | (2,061 | ) |  | 144 |  |  | (1,458 | ) |  | (2,263 | )
Balance at end of period |  | $ | 25,350 |  |  | $ | 35,706 |  |  | $ | 25,350 |  |  | $ | 35,706 |

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