Investments Investments (Continuous Unrealized Loss Positions) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 28, 2015	Mar. 29, 2014
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	$ 3,350	$ 5,723
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(97)	(275)
12 Months or Longer, Fair Value	1,384	344
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(39)	(6)
Total Fair Value	4,734	6,067
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(136)	(281)
U.S. Treasury and Government Agencies [Member]
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	499	1,562
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	(40)
12 Months or Longer, Fair Value	698	344
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(5)	(6)
Total Fair Value	1,197	1,906
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(5)	(46)
Mortgage-backed securities [Member]
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	438	2,553
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(2)	(149)
12 Months or Longer, Fair Value	330	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(25)	0
Total Fair Value	768	2,553
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(27)	(149)
States and political subdivisions [Member]
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	1,099	507
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(6)	(13)
12 Months or Longer, Fair Value	256	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(6)	0
Total Fair Value	1,355	507
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(12)	(13)
Corporate Debt Securities [Member]
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	247
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(4)
12 Months or Longer, Fair Value	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Total Fair Value	247
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(4)	0
Equity Securities [Member]
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	1,067	1,101
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(85)	(73)
12 Months or Longer, Fair Value	100	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(3)	0
Total Fair Value	1,167	1,101
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	$ (88)	$ (73)