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Investments Investments (Continuous Unrealized Loss Positions) (Details) - USD ($) $ in Thousands | Apr. 01, 2017 | Apr. 02, 2016
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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)

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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563 + Details
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