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Investments (Details 1) - USD ($) $ in Thousands | Jul. 02, 2016 | Apr. 02, 2016
--- | --- | ---
Available-for-Sale Securities by Investment Category |  |
Amortized Cost - Available-for sale Debt Securities | $ 15,155 |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 2,457 | $ 2,630
Available-for-sale Securities, Amortized Cost Basis | 21,774 | 22,147
Total Amortized Cost - Available-for-sale Securities | 21,774 | 22,147
Gross Unrealized Losses | 468 | 530
Total Fair Value - Available-for-sale Debt Securities | 15,357 |
Total Fair Value - Available-for-sale Securities | 23,763 | 24,247
Equity Method Investments | 14,764 | 14,841
U.S. Treasury and Government Agencies [Member] |  |
Available-for-Sale Securities by Investment Category |  |
Amortized Cost - Available-for sale Debt Securities | 650 | 1,002
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 1 | 0
Gross Unrealized Losses | 0 | 3
Total Fair Value - Available-for-sale Debt Securities | 651 | 999
Mortgage-backed securities [Member] |  |
Available-for-Sale Securities by Investment Category |  |
Amortized Cost - Available-for sale Debt Securities | 5,680 | 5,866
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 19 | 13
Gross Unrealized Losses | 49 | 60
Total Fair Value - Available-for-sale Debt Securities | 5,650 | 5,819
States and political subdivisions [Member] |  |
Available-for-Sale Securities by Investment Category |  |
Amortized Cost - Available-for sale Debt Securities | 7,914 | 7,231
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 291 | 239
Gross Unrealized Losses | 65 | 49
Total Fair Value - Available-for-sale Debt Securities | 8,140 | 7,421
Corporate debt securities [Member] |  |
Available-for-Sale Securities by Investment Category |  |
Amortized Cost - Available-for sale Debt Securities | 911 | 1,166
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 8 | 4
Gross Unrealized Losses | 3 | 6
Total Fair Value - Available-for-sale Debt Securities | 916 | 1,164
Marketable equity securities [Member] |  |
Available-for-Sale Securities by Investment Category |  |
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax | 2,138 | 2,374
Amortized Cost - Available-for-sale Equity Securities | 5,619 | 5,882
Gross Unrealized Losses | 351 | 412
Total Fair Value - Available-for-sale Equity Securities | 7,406 | 7,844
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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