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Regulatory Matters: Schedule of Compliance with Regulatory Capital Requirements for Mortgage Companies (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2014 | Sep. 30, 2013
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Timberland Bancorp |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Tier 1 leverage capital, Actual Amount | $ 78,480 | $ 85,158
Tier 1 leverage capital, Actual Ratio | 10.60% | 11.50%
Tier 1 leverage capital, Capital Adequacy Purposes Amount | 29,644 | 29,677
Tier 1 leverage capital, Capital Adequacy Purposes Ratio | 4.00% | 4.00%
Tier 1 risk adjusted capital, Actual Amount | 78,480 | 85,158
Tier 1 risk adjusted capital, Actual Ratio | 13.70% | 15.30%
Tier 1 risk adjusted capital, Capital Adequacy Purposes Amount | 22,943 | 22,259
Tier 1 risk adjusted capital, Capital Adequacy Purposes Ratio | 4.00% | 4.00%
Tier 1 risk based capital, Actual Amount | 85,692 | 92,168
Tier 1 risk based capital, Actual Ratio | 14.90% | 16.60%
Total risk based capital, Capital Adequacy Purposes Amount | 45,886 | 44,518
Total risk based capital, Capital Adequacy Purposes Ratio | 8.00% | 8.00%
Timberland Bank |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Tier 1 leverage capital, Actual Amount | 75,734 | 82,265
Tier 1 leverage capital, Actual Ratio | 10.20% | 11.10%
Tier 1 leverage capital, Capital Adequacy Purposes Amount | 29,629 | 29,662
Tier 1 leverage capital, Capital Adequacy Purposes Ratio | 4.00% | 4.00%
Tier 1 leverage capital, To be Well Capitalized Under Prompt Corrective Action Provisions Amount | 37,036 | 37,078
Tier 1 leverage capital, To be Well Capitalized Under Prompt Corrective Action Provisions Ratio | 5.00% | 5.00%
Tier 1 risk adjusted capital, Actual Amount | 75,734 | 82,265
Tier 1 risk adjusted capital, Actual Ratio | 13.20% | 14.80%
Tier 1 risk adjusted capital, Capital Adequacy Purposes Amount | 22,939 | 22,255
Tier 1 risk adjusted capital, Capital Adequacy Purposes Ratio | 4.00% | 4.00%
Tier 1 risk adjusted capital, To be Well Capitalized Under Prompt Corrective Action Provisions Amount | 34,409 | 33,382
Tier 1 risk adjusted capital, To be Well Capitalized Under Prompt Corrective Action Provisions Ratio | 6.00% | 6.00%
Tier 1 risk based capital, Actual Amount | 82,945 | 89,273
Tier 1 risk based capital, Actual Ratio | 14.50% | 16.10%
Total risk based capital, Capital Adequacy Purposes Amount | 45,878 | 44,509
Total risk based capital, Capital Adequacy Purposes Ratio | 8.00% | 8.00%
Total risk based capital, To be Well Capitalized Under Prompt Corrective Action Provisions Amount | $ 57,348 | $ 55,636
Total risk based capital, To be Well Capitalized Under Prompt Corrective Action Provisions Ratio | 10.00% | 10.00%

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- Definition Tier 1 Leverage Capital as defined in the regulations. Also called Core Capital. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 + Details
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- Definition The minimum amount of Tier 1 Leverage Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 + Details
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- Definition The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958570-112826 + Details
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- Definition The amount of Tier 1 Leverage Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 + Details
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- Definition Tier 1 Risk Based Capital as defined in the regulations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 + Details
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- Definition The minimum amount of Tier 1 Risk Based Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 + Details
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- Definition The minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958570-112826 + Details
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- Definition The amount of Tier 1 Risk Based Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 + Details
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- Definition The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 + Details
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