Investments (Details Textual) (USD $)	3 Months Ended		6 Months Ended			12 Months Ended	6 Months Ended	12 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014 Common stock of industrial and other companies [Member]	Mar. 29, 2014 Common stock of industrial and other companies [Member]	Sep. 27, 2014 Common stock of bank trust, insurance, and public utility companies [Member]	Mar. 29, 2014 Common stock of bank trust, insurance, and public utility companies [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value					$ 4,400,000	$ 4,700,000	$ 393,000	$ 478,000
Total unrealized losses					120,000	64,000	7,000	(9,000)
Investments (Textual) [Abstract]
Value of investments to be other-than-temporarily impaired	0
Gross gains realized	123,000	396,000	426,000	464,000
Gross losses realized	$ (11,000)	$ (48,000)	$ (79,000)	$ (84,000)