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

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-Publisher FASB

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Amount of equity securities categorized neither as held-to-maturity nor as trading.

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-Name Accounting Standards Codification

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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Investments (Details Textual) (USD $)	3 Months Ended		9 Months Ended
Investments (Details Textual) (USD $)	Dec. 27, 2014	Dec. 28, 2013	Dec. 27, 2014	Dec. 28, 2013	Mar. 29, 2014
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	$ 248,000		$ 248,000		$ 281,000
Investments (Textual) [Abstract]
Value of investments to be other-than-temporarily impaired	0
Gross gains realized	309,000	231,000	735,000	695,000
Gross losses realized	(41,000)	(56,000)	(120,000)	(140,000)
Common stock of industrial and other companies [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	4,900,000		4,900,000		4,700,000
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(188,000)		(188,000)		(64,000)
Common stock of bank trust, insurance, and public utility companies [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	100,000		100,000		478,000
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	$ (2,000)		$ (2,000)		$ (9,000)