Investments Investments (Continuous Unrealized Loss Positions) (Details) - USD ($) $ in Thousands	Apr. 01, 2017	Apr. 02, 2016
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	$ 8,563	$ 7,844
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(188)	(386)
12 Months or Longer, Fair Value	4,203	3,006
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(173)	(144)
Total Fair Value	12,766	10,850
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(361)	(530)
U.S. Treasury and Government Agencies [Member]
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	349	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1)	0
12 Months or Longer, Fair Value	0	699
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	(3)
Total Fair Value	349	699
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(1)	(3)
Mortgage-backed securities [Member]
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	3,449	3,436
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(38)	(27)
12 Months or Longer, Fair Value	1,962	898
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(52)	(33)
Total Fair Value	5,411	4,334
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(90)	(60)
States and political subdivisions [Member]
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	1,948	1,865
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(36)	(29)
12 Months or Longer, Fair Value	2,084	1,257
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(81)	(20)
Total Fair Value	4,032	3,122
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(117)	(49)
Corporate Debt Securities [Member]
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	1,424	763
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(23)	(6)
12 Months or Longer, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Total Fair Value	1,424	763
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	(23)	(6)
Equity Securities [Member]
Investment Securities in a Continuous Unrealized Loss Position
Less than 12 Months, Fair Value	1,393	1,780
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(90)	(324)
12 Months or Longer, Fair Value	157	152
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(40)	(88)
Total Fair Value	1,550	1,932
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	$ (130)	$ (412)