Investments Investments (Narrative) (Details) - USD ($)	12 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
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	1,100,000	$ 431,000
Gross losses realized	$ (413,000)	(385,000)
Common stock of industrial and other companies [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value		7,700,000
Total unrealized losses		(409,000)
Common stock of bank trust, insurance, and public utility companies [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value		100,000
Total unrealized losses		$ (3,000)