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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, 2019 | Mar. 31, 2018 | Mar. 31, 2019 | Mar. 31, 2018
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | $ 131,165 | $ 127,155 | $ 129,257 | $ 123,073
Charge-offs | (1,015) | (439) | (2,656) | (1,191)
Recoveries | 2,186 | 1,810 | 5,235 | 5,644
Provision & Transfers | 750 | (950) | 1,250 | 50
Ending Allowance | 133,086 | 127,576 | 133,086 | 127,576
Single-family residential |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 31,484 | 35,928 | 33,033 | 36,892
Charge-offs | (150) | (290) | (175) | (750)
Recoveries | 310 | 211 | 539 | 331
Provision & Transfers | (168) | (1,705) | (1,921) | (2,329)
Ending Allowance | 31,476 | 34,144 | 31,476 | 34,144
Construction |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 31,463 | 25,214 | 31,317 | 24,556
Charge-offs | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0
Provision & Transfers | 1,933 | 2,175 | 2,079 | 2,833
Ending Allowance | 33,396 | 27,389 | 33,396 | 27,389
Construction - custom |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 1,926 | 2,052 | 1,842 | 1,944
Charge-offs | 0 | 0 | 0 | (50)
Recoveries | 0 | 0 | 0 | 0
Provision & Transfers | 50 | 29 | 134 | 187
Ending Allowance | 1,976 | 2,081 | 1,976 | 2,081
Land - acquisition & development |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 9,156 | 7,355 | 7,978 | 6,829
Charge-offs | 0 | 0 | 0 | 0
Recoveries | 1,300 | 1,207 | 3,082 | 4,579
Provision & Transfers | (722) | (940) | (1,326) | (3,786)
Ending Allowance | 9,734 | 7,622 | 9,734 | 7,622
Land - consumer lot loans |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 2,144 | 2,906 | 2,164 | 2,649
Charge-offs | (48) | (18) | (120) | (66)
Recoveries | 0 | 0 | 265 | 0
Provision & Transfers | (20) | (35) | (233) | 270
Ending Allowance | 2,076 | 2,853 | 2,076 | 2,853
Multi-family |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 7,884 | 7,904 | 8,329 | 7,862
Charge-offs | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0
Provision & Transfers | (490) | 78 | (935) | 120
Ending Allowance | 7,394 | 7,982 | 7,394 | 7,982
Commercial real estate |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 12,711 | 11,625 | 11,852 | 11,818
Charge-offs | 0 | (36) | (339) | (36)
Recoveries | 244 | 1 | 770 | 1
Provision & Transfers | (507) | (2) | 165 | (195)
Ending Allowance | 12,448 | 11,588 | 12,448 | 11,588
Commercial & industrial |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 30,279 | 29,268 | 28,702 | 28,524
Charge-offs | (285) | 0 | (464) | (116)
Recoveries | 24 | 115 | 58 | 170
Provision & Transfers | 556 | (53) | 2,278 | 752
Ending Allowance | 30,574 | 29,330 | 30,574 | 29,330
HELOC |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 1,064 | 808 | 781 | 855
Charge-offs | (200) | (1) | (1,086) | (1)
Recoveries | 43 | 0 | 44 | 1
Provision & Transfers | 175 | (5) | 1,343 | (53)
Ending Allowance | 1,082 | 802 | 1,082 | 802
Consumer |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 3,054 | 4,095 | 3,259 | 1,144
Charge-offs | (332) | (94) | (472) | (172)
Recoveries | 265 | 276 | 477 | 562
Provision & Transfers | (57) | (492) | (334) | 2,251
Ending Allowance | $ 2,930 | $ 3,785 | $ 2,930 | $ 3,785

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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + 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=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + 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)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of direct write-downs of financing receivables charged against the allowance. + 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)(3) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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