Investments (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Mar. 31, 2012
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	$ 2,957	$ 4,336
12 Months or Longer, Fair Value	304	0
Total Fair Value	3,261	4,336
Less than 12 Months, Unrealized Losses	(127)	(133)
12 Months or Longer, Unrealized Losses	(55)	0
Total Unrealized Losses	(182)	(133)
U.S. Treasury and Government Agencies [Member]
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	1,084	249
12 Months or Longer, Fair Value	0	0
Total Fair Value	1,084	249
Less than 12 Months, Unrealized Losses	(6)	(1)
12 Months or Longer, Unrealized Losses	0	0
Total Unrealized Losses	(6)	(1)
Mortgage-backed securities [Member]
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	1,460	2,509
12 Months or Longer, Fair Value	0	0
Total Fair Value	1,460	2,509
Less than 12 Months, Unrealized Losses	(108)	(48)
12 Months or Longer, Unrealized Losses	0	0
Total Unrealized Losses	(108)	(48)
Corporate debt securities [Member]
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value		384
12 Months or Longer, Fair Value		0
Total Fair Value		384
Less than 12 Months, Unrealized Losses		(1)
12 Months or Longer, Unrealized Losses		0
Total Unrealized Losses		(1)
Marketable equity securities [Member]
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	413	1,194
12 Months or Longer, Fair Value	304	0
Total Fair Value	717	1,194
Less than 12 Months, Unrealized Losses	(13)	(83)
12 Months or Longer, Unrealized Losses	(55)	0
Total Unrealized Losses	$ (68)	$ (83)