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Allowance for Losses on Loans - Allowance for Credit Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Allowance | $ 132,513 | $ 131,165 | $ 131,534 | $ 129,257
Charge-offs | (449) | (1,015) | (1,067) | (2,656)
Recoveries | 2,237 | 2,186 | 5,434 | 5,235
Provision & Transfers | 5,200 | 750 | 3,600 | 1,250
Ending Allowance | 139,501 | 133,086 | 139,501 | 133,086
Single-family residential |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Allowance | 30,700 | 31,484 | 30,988 | 33,033
Charge-offs | 0 | (150) | (15) | (175)
Recoveries | 192 | 310 | 453 | 539
Provision & Transfers | (1,612) | (168) | (2,146) | (1,921)
Ending Allowance | 29,280 | 31,476 | 29,280 | 31,476
Construction |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Allowance | 32,292 | 31,463 | 32,304 | 31,317
Charge-offs | 0 | 0 | 0 | 0
Recoveries | 5 | 0 | 59 | 0
Provision & Transfers | 1,986 | 1,933 | 1,920 | 2,079
Ending Allowance | 34,283 | 33,396 | 34,283 | 33,396
Construction - custom |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Allowance | 1,399 | 1,926 | 1,369 | 1,842
Charge-offs | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0
Provision & Transfers | 181 | 50 | 211 | 134
Ending Allowance | 1,580 | 1,976 | 1,580 | 1,976
Land - acquisition & development |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Allowance | 8,746 | 9,156 | 9,155 | 7,978
Charge-offs | 0 | 0 | (11) | 0
Recoveries | 126 | 1,300 | 1,586 | 3,082
Provision & Transfers | (139) | (722) | (1,997) | (1,326)
Ending Allowance | 8,733 | 9,734 | 8,733 | 9,734
Land - consumer lot loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Allowance | 2,090 | 2,144 | 2,143 | 2,164
Charge-offs | (77) | (48) | (147) | (120)
Recoveries | 476 | 0 | 486 | 265
Provision & Transfers | (383) | (20) | (376) | (233)
Ending Allowance | 2,106 | 2,076 | 2,106 | 2,076
Multi-family |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Allowance | 7,404 | 7,884 | 7,391 | 8,329
Charge-offs | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 498 | 0
Provision & Transfers | 1,163 | (490) | 678 | (935)
Ending Allowance | 8,567 | 7,394 | 8,567 | 7,394
Commercial real estate |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Allowance | 13,035 | 12,711 | 13,170 | 11,852
Charge-offs | (13) | 0 | (111) | (339)
Recoveries | 1,020 | 244 | 1,388 | 770
Provision & Transfers | 978 | (507) | 573 | 165
Ending Allowance | 15,020 | 12,448 | 15,020 | 12,448
Commercial & industrial |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Allowance | 33,540 | 30,279 | 31,450 | 28,702
Charge-offs | (129) | (285) | (179) | (464)
Recoveries | 57 | 24 | 201 | 58
Provision & Transfers | 2,967 | 556 | 4,963 | 2,278
Ending Allowance | 36,435 | 30,574 | 36,435 | 30,574
HELOC |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Allowance | 1,104 | 1,064 | 1,103 | 781
Charge-offs | 0 | (200) | 0 | (1,086)
Recoveries | 1 | 43 | 94 | 44
Provision & Transfers | 177 | 175 | 85 | 1,343
Ending Allowance | 1,282 | 1,082 | 1,282 | 1,082
Consumer |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning Allowance | 2,203 | 3,054 | 2,461 | 3,259
Charge-offs | (230) | (332) | (604) | (472)
Recoveries | 360 | 265 | 669 | 477
Provision & Transfers | (118) | (57) | (311) | (334)
Ending Allowance | $ 2,215 | $ 2,930 | $ 2,215 | $ 2,930

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- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + 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 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118955202&loc=SL82895884-210446 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 + Details
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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + 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=118955255&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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- Definition Amount of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 3: 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=118955255&loc=SL82922352-210448 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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