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Investments (Details 1) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Mar. 31, 2012
--- | --- | ---
Investment Securities in a Continuous Unrealized Loss Position |  |
Less than 12 Months, Fair Value | $ 2,431 | $ 4,336
Less than 12 Months, Unrealized Losses | (108) | (133)
12 Months or Longer, Fair Value | 391 |
12 Months or Longer, Unrealized Losses | (81) |
Total Fair Value | 2,822 | 4,336
Total Unrealized Losses | (189) | (133)
U.S. Treasury and Government Agencies [Member] |  |
Investment Securities in a Continuous Unrealized Loss Position |  |
Less than 12 Months, Fair Value |  | 249
Less than 12 Months, Unrealized Losses |  | (1)
12 Months or Longer, Fair Value |  |
12 Months or Longer, Unrealized Losses |  |
Total Fair Value |  | 249
Total Unrealized Losses |  | (1)
Mortgage-backed securities [Member] |  |
Investment Securities in a Continuous Unrealized Loss Position |  |
Less than 12 Months, Fair Value | 1,891 | 2,509
Less than 12 Months, Unrealized Losses | (86) | (48)
12 Months or Longer, Fair Value |  |
12 Months or Longer, Unrealized Losses |  |
Total Fair Value | 1,891 | 2,509
Total Unrealized Losses | (86) | (48)
Corporate debt securities [Member] |  |
Investment Securities in a Continuous Unrealized Loss Position |  |
Less than 12 Months, Fair Value |  | 384
Less than 12 Months, Unrealized Losses |  | (1)
12 Months or Longer, Fair Value |  |
12 Months or Longer, Unrealized Losses |  |
Total Fair Value |  | 384
Total Unrealized Losses |  | (1)
Marketable equity securities [Member] |  |
Investment Securities in a Continuous Unrealized Loss Position |  |
Less than 12 Months, Fair Value | 540 | 1,194
Less than 12 Months, Unrealized Losses | (22) | (83)
12 Months or Longer, Fair Value | 391 |
12 Months or Longer, Unrealized Losses | (81) |
Total Fair Value | 931 | 1,194
Total Unrealized Losses | $ (103) | $ (83)

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- Definition This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 17 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 03-1 -Paragraph 21 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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