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Mortgage-backed Securities: Schedule of mortgage-backed securities held to maturity (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Mar. 31, 2013
--- | --- | ---
FHLMC mortgage-backed securities |  |  |
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment | $ 27 | [1] | $ 31
Held-to-maturity Securities, Unrecognized Holding Gain | 2 | [1] | 3
Held-to-maturity Securities, Fair Value | 29 | [1] | 34
FNMA mortgage-backed securities |  |  |
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment | 77 | [2] | 94
Held-to-maturity Securities, Unrecognized Holding Gain | 1 | [2] | 1
Held-to-maturity Securities, Fair Value | 78 | [2] | 95
Mortgage-backed |  |  |
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment | 104 |  | 125
Held-to-maturity Securities, Unrecognized Holding Gain | 3 |  | 4
Held-to-maturity Securities, Fair Value | $ 107 |  | $ 129
[1] | Federal Home Loan Mortgage Corporation (FHLMC)
[2] | Federal National Mortgage Association (FNMA)

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- Definition Amount before other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity. + References No definition available. + Details
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- Definition Fair value of investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 + Details
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- Definition As of the balance sheet date, the excess of fair value over carrying value (amortized cost) of a debt security categorized as held-to-maturity, exclusive of dividend or interest income recognized but not yet received and exclusive of any write-downs for other-than-temporary impairment. Such item represents the gross unrecognized holding gain. + References No definition available. + Details
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