Investments (Details 1) - USD ($) $ in Thousands	Dec. 30, 2017	Apr. 01, 2017
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis	$ 16,392
Available-for-Sale Securities by Investment Category
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	4,092	$ 2,582
Available-for-sale Securities, Amortized Cost Basis	26,781	21,941
Total Amortized Cost - Available-for-sale Securities	26,781	21,941
Gross Unrealized Losses	(386)	(361)
Total Fair Value - Available-for-sale Securities	30,487	24,162
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	16,264
Equity Method Investments	18,646	17,383
U.S. Treasury and Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis	300
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis		650
Available-for-Sale Securities by Investment Category
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Gross Unrealized Losses	(4)	(1)
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value		649
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	296
Mortgage-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis	7,510
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis		5,646
Available-for-Sale Securities by Investment Category
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	1	3
Gross Unrealized Losses	(104)	(90)
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value		5,559
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	7,407
States and political subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis	6,924
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis		7,195
Available-for-Sale Securities by Investment Category
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	142	145
Gross Unrealized Losses	(142)	(117)
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value		7,223
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	6,924
Corporate debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis	1,658
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis		1,698
Available-for-Sale Securities by Investment Category
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	2	4
Gross Unrealized Losses	(23)	(23)
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value		1,679
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	1,637
Marketable equity securities [Member]
Available-for-Sale Securities by Investment Category
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	3,947	2,430
Amortized Cost - Available-for-sale Equity Securities	7,627	5,752
Gross Unrealized Losses	(113)	(130)
Total Fair Value - Available-for-sale Equity Securities	11,461	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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