Investments (Details 1) - USD ($) $ in Thousands	Jul. 01, 2017	Apr. 01, 2017
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	$ 14,802
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	1,638	$ 2,582
Available-for-sale Securities, Amortized Cost Basis	23,622	21,941
Total Amortized Cost - Available-for-sale Securities	23,622	21,941
Gross Unrealized Losses	(326)	(361)
Total Fair Value - Available-for-sale Debt Securities	14,763
Total Fair Value - Available-for-sale Securities	24,934	24,162
Equity Method Investments	17,892	17,383
U.S. Treasury and Government Agencies [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	350	650
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Gross Unrealized Losses	(1)	(1)
Total Fair Value - Available-for-sale Debt Securities	349	649
Mortgage-backed securities [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	5,838	5,646
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	3	3
Gross Unrealized Losses	(90)	(90)
Total Fair Value - Available-for-sale Debt Securities	5,751	5,559
States and political subdivisions [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	6,920	7,195
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	165	145
Gross Unrealized Losses	(114)	(117)
Total Fair Value - Available-for-sale Debt Securities	6,971	7,223
Corporate debt securities [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	1,694	1,698
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	7	4
Gross Unrealized Losses	(9)	(23)
Total Fair Value - Available-for-sale Debt Securities	1,692	1,679
Marketable equity securities [Member]
Available-for-Sale Securities by Investment Category
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	1,463	2,430
Amortized Cost - Available-for-sale Equity Securities	6,058	5,752
Gross Unrealized Losses	(112)	(130)
Total Fair Value - Available-for-sale Equity Securities	(7,409)	(8,052)
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	2,762	1,000
Total Amortized Cost - Available-for-sale Securities	2,762	1,000
Gross Unrealized Losses	0	0
Total Fair Value - Available-for-sale Securities	$ 2,762	$ 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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