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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, 2016 | Mar. 31, 2015 | Mar. 31, 2016 | Mar. 31, 2015
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | $ 107,901 | $ 108,700 | $ 106,829 | $ 114,591
Charge-offs | (1,938) | (2,517) | (4,059) | (5,126)
Recoveries | 5,456 | 5,640 | 8,649 | 9,091
Provision & Transfers | (1,500) | (3,500) | (1,500) | (10,233)
Ending Allowance | 109,919 | 108,323 | 109,919 | 108,323
Single-family residential |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 47,756 | 55,495 | 47,347 | 62,763
Charge-offs | (1,026) | (1,409) | (2,165) | (3,103)
Recoveries | 111 | 4,122 | 2,577 | 6,675
Provision & Transfers | (5,013) | (3,446) | (5,931) | (11,573)
Ending Allowance | 41,828 | 54,762 | 41,828 | 54,762
Construction |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 7,014 | 5,451 | 6,680 | 6,742
Charge-offs | 0 | 0 | 0 | (388)
Recoveries | (5) | 75 | 150 | 75
Provision & Transfers | 8,717 | (81) | 8,896 | (984)
Ending Allowance | 15,726 | 5,445 | 15,726 | 5,445
Construction - custom |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 1,062 | 965 | 990 | 1,695
Charge-offs | 0 | 0 | (60) | 0
Recoveries | 0 | 0 | 0 | 0
Provision & Transfers | (40) | 3 | 92 | (727)
Ending Allowance | 1,022 | 968 | 1,022 | 968
Land - acquisition & development |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 6,778 | 6,671 | 5,781 | 5,592
Charge-offs | 0 | 0 | 0 | (38)
Recoveries | 3,371 | 204 | 3,406 | 205
Provision & Transfers | (2,897) | 530 | (1,935) | 1,646
Ending Allowance | 7,252 | 7,405 | 7,252 | 7,405
Land - consumer lot loans |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 3,001 | 3,113 | 2,946 | 3,077
Charge-offs | (268) | (52) | (676) | (87)
Recoveries | 0 | 34 | 0 | 34
Provision & Transfers | (267) | (60) | 196 | 11
Ending Allowance | 2,466 | 3,035 | 2,466 | 3,035
Multi-family |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 5,047 | 4,500 | 5,304 | 4,248
Charge-offs | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 220
Provision & Transfers | 1,737 | 173 | 1,480 | 205
Ending Allowance | 6,784 | 4,673 | 6,784 | 4,673
Commercial real estate |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 10,344 | 5,872 | 8,960 | 7,548
Charge-offs | (9) | 0 | (32) | (27)
Recoveries | 992 | 453 | 1,115 | 481
Provision & Transfers | (3,544) | 409 | (2,260) | (1,268)
Ending Allowance | 7,783 | 6,734 | 7,783 | 6,734
Commercial & industrial |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 24,096 | 23,328 | 24,980 | 16,527
Charge-offs | (331) | (355) | (579) | (355)
Recoveries | 590 | 18 | 591 | 52
Provision & Transfers | (531) | (1,845) | (1,168) | 4,922
Ending Allowance | 23,824 | 21,146 | 23,824 | 21,146
HELOC |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 820 | 892 | 902 | 928
Charge-offs | (26) | 0 | (27) | 0
Recoveries | 0 | 0 | 21 | 0
Provision & Transfers | 34 | (42) | (68) | (78)
Ending Allowance | 828 | 850 | 828 | 850
Consumer |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance | 1,983 | 2,413 | 2,939 | 3,227
Charge-offs | (278) | (701) | (520) | (1,128)
Recoveries | 397 | 734 | 789 | 1,349
Provision & Transfers | 304 | 859 | (802) | (143)
Ending Allowance | $ 2,406 | 3,305 | $ 2,406 | 3,305
Covered loans |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Beginning Allowance |  |  |  | 2,244
Provision & Transfers |  |  |  | (2,244)
Ending Allowance |  | $ 0 |  | $ 0

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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + 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)(1) -URI http://asc.fasb.org/extlink&oid=49124121&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=49124121&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
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