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Fair Value Measurements-Assets Measured on Recurring basis (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Mar. 31, 2016
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage servicing rights | $ 192 | $ 201
Investments, Fair Value Disclosure | 72,508 | 71,833
Fair Value, Inputs, Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage servicing rights | 0 | 0
Fair Value, Inputs, Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage servicing rights | 0 | 0
Fair Value, Inputs, Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage servicing rights | 192 | 201
Fair Value, Measurements, Recurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage servicing rights | 192 | 201
Investments, Fair Value Disclosure | 59,011 | 56,180
Assets, Fair Value Disclosure | 59,203 | 56,381
Fair Value, Measurements, Recurring [Member] | Government National Mortgage Association (GNMA) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 2,487 | 4,623
Fair Value, Measurements, Recurring [Member] | Federal Home Loan Mortgage Corporation (FHLMC) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 7,858 | 7,678
Fair Value, Measurements, Recurring [Member] | Federal National Mortgage Association (FNMA) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 26,313 | 7,824
Fair Value, Measurements, Recurring [Member] | Mortgage Backed Securities, Other |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 45 | 45
Fair Value, Measurements, Recurring [Member] | US Government Agency Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments, Fair Value Disclosure | 7,482 | 26,069
Fair Value, Measurements, Recurring [Member] | Corporate Bonds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments, Fair Value Disclosure | 4,964 |
Fair Value, Measurements, Recurring [Member] | Other investments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments, Fair Value Disclosure | 9,862 | 9,941
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage servicing rights | 0 | 0
Investments, Fair Value Disclosure | 0 | 0
Assets, Fair Value Disclosure | 0 | 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 | Government National Mortgage Association (GNMA) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 0 | 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 | Federal Home Loan Mortgage Corporation (FHLMC) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 0 | 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 | Federal National Mortgage Association (FNMA) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 0 | 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 | Mortgage Backed Securities, Other |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 0 | 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 | US Government Agency Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments, Fair Value Disclosure | 0 | 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 | Corporate Bonds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments, Fair Value Disclosure | 0 |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 | Other investments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments, Fair Value Disclosure | 0 | 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage servicing rights | 0 | 0
Investments, Fair Value Disclosure | 58,608 | 55,987
Assets, Fair Value Disclosure | 58,608 | 55,987
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 | Government National Mortgage Association (GNMA) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 2,487 | 4,623
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 | Federal Home Loan Mortgage Corporation (FHLMC) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 7,858 | 7,678
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 | Federal National Mortgage Association (FNMA) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 26,313 | 7,824
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 | Mortgage Backed Securities, Other |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 0 | 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 | US Government Agency Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments, Fair Value Disclosure | 7,482 | 26,069
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 | Corporate Bonds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments, Fair Value Disclosure | 4,964 |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 | Other investments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments, Fair Value Disclosure | 9,504 | 9,793
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments, Fair Value Disclosure | 403 | 193
Assets, Fair Value Disclosure | 595 | 394
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 | Government National Mortgage Association (GNMA) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 0 | 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 | Federal Home Loan Mortgage Corporation (FHLMC) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 0 | 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 | Federal National Mortgage Association (FNMA) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 0 | 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 | Mortgage Backed Securities, Other |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Mortgage-backed Securities Available-for-sale, Fair Value Disclosure | 45 | 45
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 | US Government Agency Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments, Fair Value Disclosure | 0 | 0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 | Corporate Bonds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments, Fair Value Disclosure | 0 |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 | Other investments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Investments, Fair Value Disclosure | $ 358 | $ 148

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82895926&loc=d3e24584-111560 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Fair value of securitized, pay-through debt securities collateralized by real estate mortgage loans classified as available-for-sale. + References No definition available. + Details
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- Definition Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122625-111746 + Details
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