Investments (Details 1) - USD ($) $ in Thousands	Sep. 26, 2015	Mar. 28, 2015
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	$ 15,606	$ 14,544
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	503	913
Available-for-sale Securities, Amortized Cost Basis	22,778	20,506
Total Amortized Cost - Available-for-sale Securities	22,778	20,506
Gross Unrealized Losses	826	136
Total Fair Value - Available-for-sale Debt Securities	15,747	14,767
Total Fair Value - Available-for-sale Securities	22,455	21,283
U.S. Treasury and Government Agencies [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	1,502	1,952
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	1	1
Gross Unrealized Losses	3	5
Total Fair Value - Available-for-sale Debt Securities	1,500	1,948
Mortgage-backed securities [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	5,311	4,342
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	25	23
Gross Unrealized Losses	35	27
Total Fair Value - Available-for-sale Debt Securities	5,301	4,338
States and political subdivisions [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	8,015	7,190
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	185	245
Gross Unrealized Losses	29	12
Total Fair Value - Available-for-sale Debt Securities	8,171	7,423
Corporate debt securities [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	778	1,060
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	2
Gross Unrealized Losses	3	4
Total Fair Value - Available-for-sale Debt Securities	775	1,058
Marketable equity securities [Member]
Available-for-Sale Securities by Investment Category
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	292	642
Amortized Cost - Available-for-sale Equity Securities	6,172	4,962
Gross Unrealized Losses	756	88
Total Fair Value - Available-for-sale Equity Securities	5,708	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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