Investments (Details 1) - USD ($) $ in Thousands	Sep. 29, 2018	Mar. 31, 2018
Available-for-Sale Securities by Investment Category
Debt Securities, Amortized Cost Basis	$ 15,159	$ 16,412
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	91	110
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(350)	(341)
Debt Securities, Available-for-sale	14,900	16,181
U.S. Treasury and Government Agencies [Member]
Available-for-Sale Securities by Investment Category
Debt Securities, Amortized Cost Basis	300	300
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Gross Unrealized Losses	(10)	(7)
Debt Securities, Available-for-sale	290	293
Mortgage-backed securities [Member]
Available-for-Sale Securities by Investment Category
Debt Securities, Amortized Cost Basis	7,714	7,654
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	0	0
Gross Unrealized Losses	(207)	(155)
Debt Securities, Available-for-sale	7,507	7,499
States and political subdivisions [Member]
Available-for-Sale Securities by Investment Category
Debt Securities, Amortized Cost Basis	5,499	6,377
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	90	109
Gross Unrealized Losses	(108)	(149)
Debt Securities, Available-for-sale	5,481	6,337
Corporate debt securities [Member]
Available-for-Sale Securities by Investment Category
Debt Securities, Amortized Cost Basis	1,646	2,081
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	1	1
Gross Unrealized Losses	(25)	(30)
Debt Securities, Available-for-sale	$ 1,622	$ 2,052

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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-Publisher FASB
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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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