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Investments (Details 1) - USD ($) $ in Thousands | Jun. 27, 2015 | Mar. 28, 2015
--- | --- | ---
Available-for-Sale Securities by Investment Category |  |
Amortized Cost - Available-for sale Debt Securities | $ 15,617 | $ 14,544
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 600 | 913
Available-for-sale Securities, Amortized Cost Basis | 22,189 | 20,506
Total Amortized Cost - Available-for-sale Securities | 22,189 | 20,506
Gross Unrealized Losses | 463 | 136
Total Fair Value - Available-for-sale Debt Securities | 15,708 | 14,767
Total Fair Value - Available-for-sale Securities | 22,326 | 21,283
U.S. Treasury and Government Agencies [Member] |  |
Available-for-Sale Securities by Investment Category |  |
Amortized Cost - Available-for sale Debt Securities | 1,702 | 1,952
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 1 | 1
Gross Unrealized Losses | 11 | 5
Total Fair Value - Available-for-sale Debt Securities | 1,692 | 1,948
Mortgage-backed securities [Member] |  |
Available-for-Sale Securities by Investment Category |  |
Amortized Cost - Available-for sale Debt Securities | 4,920 | 4,342
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 14 | 23
Gross Unrealized Losses | 43 | 27
Total Fair Value - Available-for-sale Debt Securities | 4,891 | 4,338
States and political subdivisions [Member] |  |
Available-for-Sale Securities by Investment Category |  |
Amortized Cost - Available-for sale Debt Securities | 8,213 | 7,190
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 163 | 245
Gross Unrealized Losses | 32 | 12
Total Fair Value - Available-for-sale Debt Securities | 8,344 | 7,423
Corporate debt securities [Member] |  |
Available-for-Sale Securities by Investment Category |  |
Amortized Cost - Available-for sale Debt Securities | 782 | 1,060
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 0 | 2
Gross Unrealized Losses | 1 | 4
Total Fair Value - Available-for-sale Debt Securities | 781 | 1,058
Marketable equity securities [Member] |  |
Available-for-Sale Securities by Investment Category |  |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 422 | 642
Amortized Cost - Available-for-sale Equity Securities | 5,572 | 4,962
Gross Unrealized Losses | 376 | 88
Total Fair Value - Available-for-sale Equity Securities | 5,618 | 5,516
Certificates of Deposit [Member] |  |
Available-for-Sale Securities by Investment Category |  |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 0 | 0
Available-for-sale Securities, Amortized Cost Basis | 1,000 | 1,000
Total Amortized Cost - Available-for-sale Securities | 1,000 | 1,000
Gross Unrealized Losses | 0 | 0
Total Fair Value - Available-for-sale Securities | $ 1,000 | $ 1,000

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- Definition This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 Reference 2: 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 + Details
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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558 Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26610-111562 + Details
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