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Allowance for Losses on Loans (Tables) | 3 Months Ended
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Dec. 31, 2018
Receivables [Abstract] |
Summary of Activity in Allowance for Loan Losses | The following tables summarize the activity in the allowance for loan losses.
Three Months Ended December 31, 2018 | Beginning Allowance |  | Charge-offs |  | Recoveries |  | Provision & Transfers |  | Ending Allowance
| (In thousands)
Single-family residential | $ | 33,033 |  |  | $ | (25 | ) |  | $ | 230 |  |  | $ | (1,754 | ) |  | $ | 31,484 |
Construction | 31,317 |  |  | — |  |  | — |  |  | 146 |  |  | 31,463 |
Construction - custom | 1,842 |  |  | — |  |  | — |  |  | 84 |  |  | 1,926 |
Land - acquisition & development | 7,978 |  |  | — |  |  | 1,782 |  |  | (604 | ) |  | 9,156 |
Land - consumer lot loans | 2,164 |  |  | (72 | ) |  | 265 |  |  | (213 | ) |  | 2,144 |
Multi-family | 8,329 |  |  | — |  |  | — |  |  | (445 | ) |  | 7,884 |
Commercial real estate | 11,852 |  |  | (339 | ) |  | 525 |  |  | 673 |  |  | 12,711 |
Commercial & industrial | 28,702 |  |  | (179 | ) |  | 33 |  |  | 1,723 |  |  | 30,279 |
HELOC | 781 |  |  | (886 | ) |  | 1 |  |  | 1,168 |  |  | 1,064 |
Consumer | 3,259 |  |  | (140 | ) |  | 213 |  |  | (278 | ) |  | 3,054 |
| $ | 129,257 |  |  | $ | (1,641 | ) |  | $ | 3,049 |  |  | $ | 500 |  |  | $ | 131,165 |
Three Months Ended December 31, 2017 | Beginning Allowance |  | Charge-offs |  | Recoveries |  | Provision & Transfers |  | Ending Allowance
| (In thousands)
Single-family residential | $ | 36,892 |  |  | $ | (461 | ) |  | $ | 121 |  |  | $ | (624 | ) |  | $ | 35,928 |
Construction | 24,556 |  |  | — |  |  | — |  |  | 658 |  |  | 25,214 |
Construction - custom | 1,944 |  |  | (50 | ) |  | — |  |  | 158 |  |  | 2,052 |
Land - acquisition & development | 6,829 |  |  | — |  |  | 3,372 |  |  | (2,846 | ) |  | 7,355 |
Land - consumer lot loans | 2,649 |  |  | (47 | ) |  | — |  |  | 304 |  |  | 2,906 |
Multi-family | 7,862 |  |  | — |  |  | — |  |  | 42 |  |  | 7,904 |
Commercial real estate | 11,818 |  |  | — |  |  | — |  |  | (193 | ) |  | 11,625 |
Commercial & industrial | 28,524 |  |  | (116 | ) |  | 55 |  |  | 805 |  |  | 29,268 |
HELOC | 855 |  |  | — |  |  | — |  |  | (47 | ) |  | 808 |
Consumer | 1,144 |  |  | (78 | ) |  | 286 |  |  | 2,743 |  |  | 4,095 |
| $ | 123,073 |  |  | $ | (752 | ) |  | $ | 3,834 |  |  | $ | 1,000 |  |  | $ | 127,155 |
Summary of Loans Collectively and Individually Evaluated for Impairment and Related Allocation of Reserves | The following tables show loans collectively and individually evaluated for impairment and the related allocation of general and specific reserves.
December 31, 2018 | Loans Collectively Evaluated for Impairment |  | Loans Individually Evaluated for Impairment
| Allowance Allocation |  | Recorded Investment of Loans |  | Ratio |  | Allowance Allocation |  | Recorded Investment of Loans |  | Ratio
| (In thousands, except ratio data) |  | (In thousands, except ratio data)
Single-family residential | $ | 31,484 |  |  | $ | 5,833,667 |  |  | 0.5 | % |  | $ | — |  |  | $ | 16,259 |  |  | — | %
Construction | 31,463 |  |  | 1,045,849 |  |  | 3.0 |  |  | — |  |  | 1,380 |  |  | — |
Construction - custom | 1,926 |  |  | 299,622 |  |  | 0.6 |  |  | — |  |  | — |  |  | — |
Land - acquisition & development | 9,147 |  |  | 145,197 |  |  | 6.3 |  |  | 9 |  |  | 438 |  |  | 2.1 |
Land - consumer lot loans | 2,144 |  |  | 95,628 |  |  | 2.2 |  |  | — |  |  | 303 |  |  | — |
Multi-family | 7,880 |  |  | 1,404,714 |  |  | 0.6 |  |  | 4 |  |  | 435 |  |  | 0.9 |
Commercial real estate | 12,569 |  |  | 1,512,064 |  |  | 0.8 |  |  | 142 |  |  | 14,823 |  |  | 1.0 |
Commercial & industrial | 29,934 |  |  | 1,199,565 |  |  | 2.5 |  |  | 345 |  |  | 14,206 |  |  | 2.4 |
HELOC | 1,064 |  |  | 135,369 |  |  | 0.8 |  |  | — |  |  | 519 |  |  | — |
Consumer | 3,054 |  |  | 161,958 |  |  | 1.9 |  |  | — |  |  | 162 |  |  | — |
| $ | 130,665 |  |  | $ | 11,833,633 |  |  | 1.1 | % |  | $ | 500 |  |  | $ | 48,525 |  |  | 1.0 | %
September 30, 2018 | Loans Collectively Evaluated for Impairment |  | Loans Individually Evaluated for Impairment
| Allowance Allocation |  | Recorded Investment of Loans |  | Ratio |  | Allowance Allocation |  | Recorded Investment of Loans |  | Ratio
| (In thousands, except ratio data) |  | (In thousands, except ratio data)
Single-family residential | $ | 33,033 |  |  | $ | 5,782,870 |  |  | 0.6 | % |  | $ | — |  |  | $ | 21,345 |  |  | — | %
Construction | 31,317 |  |  | 1,060,428 |  |  | 3.0 |  |  | — |  |  | 2,427 |  |  | — |
Construction - custom | 1,842 |  |  | 289,192 |  |  | 0.6 |  |  | — |  |  | — |  |  | — |
Land - acquisition & development | 7,969 |  |  | 122,639 |  |  | 6.5 |  |  | 9 |  |  | 920 |  |  | 1.0 |
Land - consumer lot loans | 2,164 |  |  | 96,583 |  |  | 2.2 |  |  | — |  |  | 507 |  |  | — |
Multi-family | 8,325 |  |  | 1,384,655 |  |  | 0.6 |  |  | 4 |  |  | 448 |  |  | 1.0 |
Commercial real estate | 11,702 |  |  | 1,432,791 |  |  | 0.8 |  |  | 150 |  |  | 19,378 |  |  | 0.8 |
Commercial & industrial | 28,348 |  |  | 1,126,438 |  |  | 2.5 |  |  | 354 |  |  | 14,437 |  |  | 2.5 |
HELOC | 781 |  |  | 128,715 |  |  | 0.6 |  |  | — |  |  | 1,162 |  |  | — |
Consumer | 3,259 |  |  | 173,181 |  |  | 1.9 |  |  | — |  |  | 56 |  |  | — |
| $ | 128,740 |  |  | $ | 11,597,492 |  |  | 1.1 | % |  | $ | 517 |  |  | $ | 60,680 |  |  | 0.9 | %
Summary of Loans Based on Credit Quality Indicators | The following tables provide information on loans based on risk rating categories as defined above.
December 31, 2018 | Internally Assigned Grade |  |
| Pass |  | Special mention |  | Substandard |  | Doubtful |  | Loss |  | Total Gross Loans
| (In thousands, except ratio data)
Loan type |  |  |  |  |  |  |  |  |  |  |
Single-family residential | $ | 5,815,029 |  |  | $ | — |  |  | $ | 29,934 |  |  | $ | — |  |  | $ | — |  |  | $ | 5,844,963 |
Construction | 1,832,326 |  |  | 7,968 |  |  | 1,380 |  |  | — |  |  | — |  |  | 1,841,674 |
Construction - custom | 607,071 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 607,071 |
Land - acquisition & development | 179,602 |  |  | — |  |  | 1,721 |  |  | — |  |  | — |  |  | 181,323 |
Land - consumer lot loans | 99,778 |  |  | — |  |  | 785 |  |  | — |  |  | — |  |  | 100,563 |
Multi-family | 1,397,920 |  |  | 3,254 |  |  | 3,998 |  |  | — |  |  | — |  |  | 1,405,172 |
Commercial real estate | 1,484,559 |  |  | 19,810 |  |  | 22,518 |  |  | — |  |  | — |  |  | 1,526,887 |
Commercial & industrial | 1,169,981 |  |  | 9,790 |  |  | 33,967 |  |  | — |  |  | — |  |  | 1,213,738 |
HELOC | 136,256 |  |  | — |  |  | 600 |  |  | — |  |  | — |  |  | 136,856 |
Consumer | 162,191 |  |  | — |  |  | 30 |  |  | — |  |  | — |  |  | 162,221 |
Total gross loans | $ | 12,884,713 |  |  | $ | 40,822 |  |  | $ | 94,933 |  |  | $ | — |  |  | $ | — |  |  | $ | 13,020,468 |
Total grade as a % of total gross loans | 99.0 | % |  | 0.3 | % |  | 0.7 | % |  | — | % |  | — | % |  |
September 30, 2018 | Internally Assigned Grade |  |
| Pass |  | Special mention |  | Substandard |  | Doubtful |  | Loss |  | Total Gross Loans
| (In thousands, except ratio data)
Loan type |  |  |  |  |  |  |  |  |  |  |
Single-family residential | $ | 5,766,096 |  |  | $ | — |  |  | $ | 32,870 |  |  | $ | — |  |  | $ | — |  |  | $ | 5,798,966 |
Construction | 1,886,304 |  |  | 1,937 |  |  | 2,427 |  |  | — |  |  | — |  |  | 1,890,668 |
Construction - custom | 624,479 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 624,479 |
Land - acquisition & development | 152,984 |  |  | — |  |  | 2,220 |  |  | — |  |  | — |  |  | 155,204 |
Land - consumer lot loans | 101,249 |  |  | — |  |  | 787 |  |  | — |  |  | — |  |  | 102,036 |
Multi-family | 1,378,803 |  |  | 1,633 |  |  | 4,689 |  |  | — |  |  | — |  |  | 1,385,125 |
Commercial real estate | 1,421,602 |  |  | 7,114 |  |  | 23,452 |  |  | — |  |  | — |  |  | 1,452,168 |
Commercial & industrial | 1,093,405 |  |  | 16,513 |  |  | 30,956 |  |  | — |  |  | — |  |  | 1,140,874 |
HELOC | 130,330 |  |  | — |  |  | 522 |  |  | — |  |  | — |  |  | 130,852 |
Consumer | 173,285 |  |  | — |  |  | 21 |  |  | — |  |  | — |  |  | 173,306 |
Total gross loans | $ | 12,728,537 |  |  | $ | 27,197 |  |  | $ | 97,944 |  |  | $ | — |  |  | $ | — |  |  | $ | 12,853,678 |
Total grade as a % of total gross loans | 99.0 | % |  | 0.2 | % |  | 0.8 | % |  | — | % |  | — | % |  |
The following tables provide information on gross loans based on borrower payment activity.
December 31, 2018 | Performing Loans |  | Non-Performing Loans
| Amount |  | % of Total Gross Loans |  | Amount |  | % of Total Gross Loans
| (In thousands, except ratio data)
Single-family residential | $ | 5,820,215 |  |  | 99.6 | % |  | $ | 24,748 |  |  | 0.4 | %
Construction | 1,840,294 |  |  | 99.9 |  |  | 1,380 |  |  | 0.1 |
Construction - custom | 607,071 |  |  | 100.0 |  |  | — |  |  | — |
Land - acquisition & development | 180,885 |  |  | 99.8 |  |  | 438 |  |  | 0.2 |
Land - consumer lot loans | 99,778 |  |  | 99.2 |  |  | 785 |  |  | 0.8 |
Multi-family | 1,405,172 |  |  | 100.0 |  |  | — |  |  | — |
Commercial real estate | 1,517,409 |  |  | 99.4 |  |  | 9,478 |  |  | 0.6 |
Commercial & industrial | 1,199,743 |  |  | 98.8 |  |  | 13,995 |  |  | 1.2 |
HELOC | 136,257 |  |  | 99.6 |  |  | 599 |  |  | 0.4 |
Consumer | 162,194 |  |  | 100.0 |  |  | 27 |  |  | — |
| $ | 12,969,018 |  |  | 99.6 | % |  | $ | 51,450 |  |  | 0.4 | %
September 30, 2018 | Performing Loans |  | Non-Performing Loans
| Amount |  | % of Total Gross Loans |  | Amount |  | % of Total Gross Loans
| (In thousands, except ratio data)
Single-family residential | $ | 5,771,323 |  |  | 99.5 | % |  | $ | 27,643 |  |  | 0.5 | %
Construction | 1,888,241 |  |  | 99.9 |  |  | 2,427 |  |  | 0.1 |
Construction - custom | 624,479 |  |  | 100.0 |  |  | — |  |  | — |
Land - acquisition & development | 154,284 |  |  | 99.4 |  |  | 920 |  |  | 0.6 |
Land - consumer lot loans | 101,249 |  |  | 99.2 |  |  | 787 |  |  | 0.8 |
Multi-family | 1,385,125 |  |  | 100.0 |  |  | — |  |  | — |
Commercial real estate | 1,443,197 |  |  | 99.4 |  |  | 8,971 |  |  | 0.6 |
Commercial & industrial | 1,126,480 |  |  | 98.7 |  |  | 14,394 |  |  | 1.3 |
HELOC | 130,329 |  |  | 99.6 |  |  | 523 |  |  | 0.4 |
Consumer | 173,285 |  |  | 100.0 |  |  | 21 |  |  | — |
| $ | 12,797,992 |  |  | 99.6 | % |  | $ | 55,686 |  |  | 0.4 | %
Summary of Impaired Loans Based on Type | The following tables provide information on impaired loan balances and the related allowances by loan types.
December 31, 2018 | Recorded Investment |  | Unpaid Principal Balance |  | Related Allowance |  | Average Recorded Investment (Year-To-Date)
| (In thousands)
Impaired loans with no related allowance recorded: |  |  |  |  |  |  |
Single-family residential | $ | 15,438 |  |  | $ | 16,633 |  |  | $ | — |  |  | $ | 17,155 |
Construction | 1,630 |  |  | 1,750 |  |  | — |  |  | 2,164 |
Land - acquisition & development | 335 |  |  | 335 |  |  | — |  |  | 575 |
Land - consumer lot loans | 181 |  |  | 281 |  |  | — |  |  | 246 |
Commercial real estate | 9,945 |  |  | 15,035 |  |  | — |  |  | 9,685 |
Commercial & industrial | 9,868 |  |  | 10,055 |  |  | — |  |  | 10,003 |
HELOC | 519 |  |  | 612 |  |  | — |  |  | 465 |
Consumer | 25 |  |  | 230 |  |  | — |  |  | 23 |
| 37,941 |  |  | 44,931 |  |  | — |  |  | 40,316 |
Impaired loans with an allowance recorded: |  |  |  |  |  |  |
Single-family residential | 133,808 |  |  | 136,876 |  |  | 2,498 |  |  | 136,802 |
Land - acquisition & development | 103 |  |  | 156 |  |  | — |  |  | 105 |
Land - consumer lot loans | 4,601 |  |  | 4,930 |  |  | 9 |  |  | 4,759 |
Multi-family | 435 |  |  | 435 |  |  | 4 |  |  | 442 |
Commercial real estate | 5,552 |  |  | 6,625 |  |  | 142 |  |  | 5,903 |
Commercial & industrial | 4,159 |  |  | 7,502 |  |  | 345 |  |  | 4,225 |
HELOC | 968 |  |  | 978 |  |  | — |  |  | 972 |
Consumer | 67 |  |  | 67 |  |  | — |  |  | 69 |
| 149,693 |  |  | 157,569 |  |  | 2,998 |  | (1) | 153,277 |
Total impaired loans: |  |  |  |  |  |  |
Single-family residential | 149,246 |  |  | 153,509 |  |  | 2,498 |  |  | 153,957 |
Construction | 1,630 |  |  | 1,750 |  |  | — |  |  | 2,164 |
Land - acquisition & development | 438 |  |  | 491 |  |  | — |  |  | 680 |
Land - consumer lot loans | 4,782 |  |  | 5,211 |  |  | 9 |  |  | 5,005 |
Multi-family | 435 |  |  | 435 |  |  | 4 |  |  | 442 |
Commercial real estate | 15,497 |  |  | 21,660 |  |  | 142 |  |  | 15,588 |
Commercial & industrial | 14,027 |  |  | 17,557 |  |  | 345 |  |  | 14,228 |
HELOC | 1,487 |  |  | 1,590 |  |  | — |  |  | 1,437 |
Consumer | 92 |  |  | 297 |  |  | — |  |  | 92 |
| $ | 187,634 |  |  | $ | 202,500 |  |  | $ | 2,998 |  | (1) | $ | 193,593 |
(1) | Includes $500,000 of specific reserves and $2,498,000 included in the general reserves.
September 30, 2018 | Recorded Investment |  | Unpaid Principal Balance |  | Related Allowance |  | Average Recorded Investment (Year-To-Date)
| (In thousands)
Impaired loans with no related allowance recorded: |  |  |  |  |  |  |
Single-family residential | $ | 18,872 |  |  | $ | 20,050 |  |  | $ | — |  |  | $ | 20,097 |
Construction | 2,698 |  |  | 2,818 |  |  | — |  |  | 1,349 |
Construction - custom | — |  |  | — |  |  | — |  |  | 74 |
Land - acquisition & development | 814 |  |  | 814 |  |  | — |  |  | 572 |
Land - consumer lot loans | 311 |  |  | 336 |  |  | — |  |  | 260 |
Multi-family | — |  |  | — |  |  | — |  |  | 70 |
Commercial real estate | 9,425 |  |  | 14,035 |  |  | — |  |  | 11,158 |
Commercial & industrial | 10,137 |  |  | 10,146 |  |  | — |  |  | 9,208 |
HELOC | 410 |  |  | 1,170 |  |  | — |  |  | 450 |
Consumer | 20 |  |  | 56 |  |  | — |  |  | 54 |
| 42,687 |  |  | 49,425 |  |  | — |  |  | 43,292 |
Impaired loans with an allowance recorded: |  |  |  |  |  |  |
Single-family residential | 139,796 |  |  | 143,099 |  |  | 2,871 |  |  | 161,729 |
Land - acquisition & development | 107 |  |  | 157 |  |  | — |  |  | 39 |
Land - consumer lot loans | 4,916 |  |  | 5,290 |  |  | 9 |  |  | 6,449 |
Multi-family | 448 |  |  | 448 |  |  | 4 |  |  | 471 |
Commercial real estate | 6,254 |  |  | 7,733 |  |  | 150 |  |  | 10,445 |
Commercial & industrial | 4,291 |  |  | 7,506 |  |  | 354 |  |  | 4,495 |
HELOC | 976 |  |  | 984 |  |  | — |  |  | 1,395 |
Consumer | 70 |  |  | 70 |  |  | — |  |  | 83 |
| 156,858 |  |  | 165,287 |  |  | 3,388 |  | (1) | 185,106 |
Total impaired loans: |  |  |  |  |  |  |
Single-family residential | 158,668 |  |  | 163,149 |  |  | 2,871 |  |  | 181,826 |
Construction | 2,698 |  |  | 2,818 |  |  | — |  |  | 1,349 |
Construction - custom | — |  |  | — |  |  | — |  |  | 74 |
Land - acquisition & development | 921 |  |  | 971 |  |  | — |  |  | 611 |
Land - consumer lot loans | 5,227 |  |  | 5,626 |  |  | 9 |  |  | 6,709 |
Multi-family | 448 |  |  | 448 |  |  | 4 |  |  | 541 |
Commercial real estate | 15,679 |  |  | 21,768 |  |  | 150 |  |  | 21,603 |
Commercial & industrial | 14,428 |  |  | 17,652 |  |  | 354 |  |  | 13,703 |
HELOC | 1,386 |  |  | 2,154 |  |  | — |  |  | 1,845 |
Consumer | 90 |  |  | 126 |  |  | — |  |  | 137 |
| $ | 199,545 |  |  | $ | 214,712 |  |  | $ | 3,388 |  | (1) | $ | 228,398 |
(1) | Includes $517,000 of specific reserves and $2,871,000 included in the general reserves.

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- Definition Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Tabular disclosure of financing receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of financing receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953659-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 55 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=82894031&loc=SL6953803-111525 + Details
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- Definition Tabular disclosure of impaired financing receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 + Details
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- Definition Schedule of Loans Collectively and Individually Evaluated for Impairment [Table Text Block] + References No definition available. + Details
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