Investments (Details 1) - USD ($) $ in Thousands	Dec. 26, 2015	Mar. 28, 2015
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	$ 15,966	$ 14,544
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	625	913
Available-for-sale Securities, Amortized Cost Basis	22,820	20,506
Total Amortized Cost - Available-for-sale Securities	22,820	20,506
Gross Unrealized Losses	1,009	136
Total Fair Value - Available-for-sale Debt Securities	16,015	14,767
Total Fair Value - Available-for-sale Securities	22,436	21,283
Equity Method Investments	10,398	10,636
U.S. Treasury and Government Agencies [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	1,002	1,952
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	1
Gross Unrealized Losses	10	5
Total Fair Value - Available-for-sale Debt Securities	992	1,948
Mortgage-backed securities [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	6,289	4,342
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	3	23
Gross Unrealized Losses	78	27
Total Fair Value - Available-for-sale Debt Securities	6,214	4,338
States and political subdivisions [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	7,504	7,190
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	199	245
Gross Unrealized Losses	56	12
Total Fair Value - Available-for-sale Debt Securities	7,647	7,423
Corporate debt securities [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	1,171	1,060
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	2
Gross Unrealized Losses	9	4
Total Fair Value - Available-for-sale Debt Securities	1,162	1,058
Marketable equity securities [Member]
Available-for-Sale Securities by Investment Category
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	423	642
Amortized Cost - Available-for-sale Equity Securities	5,854	4,962
Gross Unrealized Losses	856	88
Total Fair Value - Available-for-sale Equity Securities	5,421	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

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.

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