Investments (Details 1) - USD ($) $ in Thousands	Sep. 30, 2017	Apr. 01, 2017
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	$ 15,146
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	3,522	$ 2,582
Available-for-sale Securities, Amortized Cost Basis	24,509	21,941
Total Amortized Cost - Available-for-sale Securities	24,509	21,941
Gross Unrealized Losses	(318)	(361)
Total Fair Value - Available-for-sale Debt Securities	15,086
Total Fair Value - Available-for-sale Securities	27,713	24,162
Equity Method Investments	18,543	17,383
U.S. Treasury and Government Agencies [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	650	650
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Gross Unrealized Losses	(2)	(1)
Total Fair Value - Available-for-sale Debt Securities	648	649
Mortgage-backed securities [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	6,549	5,646
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	2	3
Gross Unrealized Losses	(95)	(90)
Total Fair Value - Available-for-sale Debt Securities	6,456	5,559
States and political subdivisions [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	6,257	7,195
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	168	145
Gross Unrealized Losses	(124)	(117)
Total Fair Value - Available-for-sale Debt Securities	6,301	7,223
Corporate debt securities [Member]
Available-for-Sale Securities by Investment Category
Amortized Cost - Available-for sale Debt Securities	1,690	1,698
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	4	4
Gross Unrealized Losses	(13)	(23)
Total Fair Value - Available-for-sale Debt Securities	1,681	1,679
Marketable equity securities [Member]
Available-for-Sale Securities by Investment Category
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	3,348	2,430
Amortized Cost - Available-for-sale Equity Securities	6,601	5,752
Gross Unrealized Losses	(84)	(130)
Total Fair Value - Available-for-sale Equity Securities	9,865	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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