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Investments (Details 2) - USD ($) $ in Thousands | Sep. 29, 2018 | Mar. 31, 2018
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Investment Securities in a Continuous Unrealized Loss Position |  |
Less than 12 Months, Fair Value | $ 4,640 | $ 7,086
Less than 12 month, Unrealized Losses | (85) | (111)
12 Months or Longer, Fair Value | 8,097 | 6,456
12 Months or Longer, Unrealized Losses | (265) | (230)
Debt Securities, Available-for-sale, Unrealized Loss Position | 12,737 | 13,542
Gross Unrealized Losses | (350) | (341)
U.S. Treasury and Government Agencies [Member] |  |
Investment Securities in a Continuous Unrealized Loss Position |  |
Less than 12 Months, Fair Value | 290 | 293
Less than 12 month, Unrealized Losses | (10) | (7)
12 Months or Longer, Fair Value | 0 | 0
12 Months or Longer, Unrealized Losses | 0 | 0
Debt Securities, Available-for-sale, Unrealized Loss Position | 290 | 293
Gross Unrealized Losses | (10) | (7)
Mortgage-backed securities [Member] |  |
Investment Securities in a Continuous Unrealized Loss Position |  |
Less than 12 Months, Fair Value | 2,738 | 3,185
Less than 12 month, Unrealized Losses | (51) | (52)
12 Months or Longer, Fair Value | 4,764 | 3,909
12 Months or Longer, Unrealized Losses | (156) | (103)
Debt Securities, Available-for-sale, Unrealized Loss Position | 7,502 | 7,094
Gross Unrealized Losses | (207) | (155)
States and political subdivisions [Member] |  |
Investment Securities in a Continuous Unrealized Loss Position |  |
Less than 12 Months, Fair Value | 1,097 | 2,224
Less than 12 month, Unrealized Losses | (18) | (40)
12 Months or Longer, Fair Value | 2,478 | 2,180
12 Months or Longer, Unrealized Losses | (90) | (109)
Debt Securities, Available-for-sale, Unrealized Loss Position | 3,575 | 4,404
Gross Unrealized Losses | (108) | (149)
Corporate Debt Securities [Member] |  |
Investment Securities in a Continuous Unrealized Loss Position |  |
Less than 12 Months, Fair Value | 515 | 1,384
Less than 12 month, Unrealized Losses | (6) | (12)
12 Months or Longer, Fair Value | 855 | 367
12 Months or Longer, Unrealized Losses | (19) | (18)
Debt Securities, Available-for-sale, Unrealized Loss Position | 1,370 | 1,751
Gross Unrealized Losses | $ (25) | $ (30)

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