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Loans Receivable And Allowance For Loan Losses: Schedule of loans evaluated individually for impairment and collectively evaluated for impairment in the allowance for loan losses (Details) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014
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Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for Loan Losses, Individually Evaluated for Impairment | $ 864 |  | $ 1,011 |  |  |
Allowance for Loan Losses, Collectively Evaluated for Impairment | 9,179 |  | 8,913 |  |  |
Allowance for Loan Losses, Total | 10,043 | $ 9,889 | 9,924 | $ 10,382 | $ 10,322 | $ 10,427
Recorded Investment in Loans, Individually Evaluated for Impairment | 17,140 |  | 24,431 |  |  |
Recorded Investment in Loans, Collectively Evaluated for Impairment | 617,802 |  | 591,963 |  |  |
Loans receivable | 634,942 |  | 616,394 |  |  |
Mortgage loans, one-to-four family |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for Loan Losses, Individually Evaluated for Impairment | 120 |  | 307 |  |  |
Allowance for Loan Losses, Collectively Evaluated for Impairment | 1,203 |  | 1,173 |  |  |
Allowance for Loan Losses, Total | 1,323 | 1,420 | 1,480 | 1,596 | 1,504 | 1,650
Recorded Investment in Loans, Individually Evaluated for Impairment | 2,930 |  | 4,291 |  |  |
Recorded Investment in Loans, Collectively Evaluated for Impairment | 114,535 |  | 112,373 |  |  |
Loans receivable | 117,465 |  | 116,664 |  |  |
Mortgage loans, multi-family |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for Loan Losses, Individually Evaluated for Impairment | 0 |  | 16 |  |  |
Allowance for Loan Losses, Collectively Evaluated for Impairment | 315 |  | 376 |  |  |
Allowance for Loan Losses, Total | 315 | 373 | 392 | 302 | 368 | 387
Recorded Investment in Loans, Individually Evaluated for Impairment | 0 |  | 4,037 |  |  |
Recorded Investment in Loans, Collectively Evaluated for Impairment | 42,666 |  | 48,285 |  |  |
Loans receivable | 42,666 |  | 52,322 |  |  |
Mortgage loans, commercial |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for Loan Losses, Individually Evaluated for Impairment | 412 |  | 265 |  |  |
Allowance for Loan Losses, Collectively Evaluated for Impairment | 3,671 |  | 3,800 |  |  |
Allowance for Loan Losses, Total | 4,083 | 3,898 | 4,065 | 3,601 | 3,646 | 4,836
Recorded Investment in Loans, Individually Evaluated for Impairment | 11,977 |  | 12,852 |  |  |
Recorded Investment in Loans, Collectively Evaluated for Impairment | 278,840 |  | 278,364 |  |  |
Loans receivable | 290,817 |  | 291,216 |  |  |
Mortgage loans, construction - custom and owner/builder |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for Loan Losses, Individually Evaluated for Impairment | 0 |  | 0 |  |  |
Allowance for Loan Losses, Collectively Evaluated for Impairment | 542 |  | 451 |  |  |
Allowance for Loan Losses, Total | 542 | 555 | 451 | 475 | 460 | 450
Recorded Investment in Loans, Individually Evaluated for Impairment | 0 |  | 0 |  |  |
Recorded Investment in Loans, Collectively Evaluated for Impairment | 41,312 |  | 36,192 |  |  |
Loans receivable | 41,312 |  | 36,192 |  |  |
Mortgage loans, construction - speculative one-to-four family |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for Loan Losses, Individually Evaluated for Impairment | 0 |  | 0 |  |  |
Allowance for Loan Losses, Collectively Evaluated for Impairment | 96 |  | 123 |  |  |
Allowance for Loan Losses, Total | 96 | 122 | 123 | 64 | 50 | 52
Recorded Investment in Loans, Individually Evaluated for Impairment | 0 |  | 0 |  |  |
Recorded Investment in Loans, Collectively Evaluated for Impairment | 2,956 |  | 3,781 |  |  |
Loans receivable | 2,956 |  | 3,781 |  |  |
Mortgage loans, construction – commercial |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for Loan Losses, Individually Evaluated for Impairment | 0 |  | 0 |  |  |
Allowance for Loan Losses, Collectively Evaluated for Impairment | 617 |  | 426 |  |  |
Allowance for Loan Losses, Total | 617 | 486 | 426 | 37 | 28 | 78
Recorded Investment in Loans, Individually Evaluated for Impairment | 0 |  | 0 |  |  |
Recorded Investment in Loans, Collectively Evaluated for Impairment | 16,902 |  | 12,200 |  |  |
Loans receivable | 16,902 |  | 12,200 |  |  |
Mortgage loans, construction - Multi-family |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for Loan Losses, Individually Evaluated for Impairment | 0 |  | 0 |  |  |
Allowance for Loan Losses, Collectively Evaluated for Impairment | 409 |  | 283 |  |  |
Allowance for Loan Losses, Total | 409 | 336 | 283 | 129 | 75 | 25
Recorded Investment in Loans, Individually Evaluated for Impairment | 0 |  | 0 |  |  |
Recorded Investment in Loans, Collectively Evaluated for Impairment | 13,623 |  | 5,290 |  |  |
Loans receivable | 13,623 |  | 5,290 |  |  |
Mortgage loans, land |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for Loan Losses, Individually Evaluated for Impairment | 57 |  | 37 |  |  |
Allowance for Loan Losses, Collectively Evaluated for Impairment | 897 |  | 984 |  |  |
Allowance for Loan Losses, Total | 954 | 923 | 1,021 | 2,753 | 2,817 | 1,434
Recorded Investment in Loans, Individually Evaluated for Impairment | 1,185 |  | 2,305 |  |  |
Recorded Investment in Loans, Collectively Evaluated for Impairment | 23,137 |  | 23,835 |  |  |
Loans receivable | 24,322 |  | 26,140 |  |  |
Consumer loans, home equity and second mortgage |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for Loan Losses, Individually Evaluated for Impairment | 259 |  | 362 |  |  |
Allowance for Loan Losses, Collectively Evaluated for Impairment | 762 |  | 711 |  |  |
Allowance for Loan Losses, Total | 1,021 | 1,102 | 1,073 | 797 | 801 | 879
Recorded Investment in Loans, Individually Evaluated for Impairment | 1,015 |  | 910 |  |  |
Recorded Investment in Loans, Collectively Evaluated for Impairment | 36,129 |  | 33,247 |  |  |
Loans receivable | 37,144 |  | 34,157 |  |  |
Consumer loans, other |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for Loan Losses, Individually Evaluated for Impairment | 16 |  | 24 |  |  |
Allowance for Loan Losses, Collectively Evaluated for Impairment | 146 |  | 163 |  |  |
Allowance for Loan Losses, Total | 162 | 161 | 187 | 190 | 159 | 176
Recorded Investment in Loans, Individually Evaluated for Impairment | 33 |  | 36 |  |  |
Recorded Investment in Loans, Collectively Evaluated for Impairment | 4,347 |  | 4,633 |  |  |
Loans receivable | 4,380 |  | 4,669 |  |  |
Commercial business loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |
Allowance for Loan Losses, Individually Evaluated for Impairment | 0 |  | 0 |  |  |
Allowance for Loan Losses, Collectively Evaluated for Impairment | 521 |  | 423 |  |  |
Allowance for Loan Losses, Total | 521 | $ 513 | 423 | $ 438 | $ 414 | $ 460
Recorded Investment in Loans, Individually Evaluated for Impairment | 0 |  | 0 |  |  |
Recorded Investment in Loans, Collectively Evaluated for Impairment | 43,355 |  | 33,763 |  |  |
Loans receivable | $ 43,355 |  | $ 33,763 |  |  |

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- Definition Loans Receivable, Including Loans Held-For-Sale and Loans in Process, Gross + References No definition available. + Details
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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=66008989&loc=SL6953423-111524 + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + 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 (g) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + 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 (g) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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