Investments Investments (Narrative) (Details) (USD $)	12 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Schedule of Available-for-sale Securities [Line Items]
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	$ 0
Investments (Textual) [Abstract]
Gross gains realized	885,000	216,000
Gross losses realized	(320,000)	(66,000)
Common stock of industrial and other companies [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	4,700,000	3,700,000
Total unrealized losses	(64,000)	(51,000)
Common stock of bank trust, insurance, and public utility companies [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	478,000	1,600,000
Total unrealized losses	$ (9,000)	$ (17,000)