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Fair Value Measurements (Assets Measured at Fair Value on a Recurring Basis) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Mar. 30, 2019 | Mar. 31, 2018
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Fair Value, Assets, Level 1, Level 2, or Level 3 Transfers, Amount |  | $ 0 |  |  |
Recurring | Securities issued by the U.S. Treasury and Government |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 297,000 |  | $ 293,000 |
Recurring | Mortgage-backed securities |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 6,509,000 |  | 7,499,000 |
Recurring | Securities issued by states and political subdivisions |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 4,983,000 |  | 6,337,000 |
Recurring | Corporate debt securities |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 1,619,000 |  | 2,052,000 |
Recurring | Marketable equity securities |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value |  | 11,073,000 | [2] | 8,695,000 | [1]
Level 1 | Recurring | Securities issued by the U.S. Treasury and Government |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 0 |  | 0 |
Level 1 | Recurring | Mortgage-backed securities |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 0 |  | 0 |
Level 1 | Recurring | Securities issued by states and political subdivisions |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 0 |  | 0 |
Level 1 | Recurring | Corporate debt securities |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 0 |  | 0 |
Level 1 | Recurring | Marketable equity securities |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value |  | 11,073,000 | [2] | 8,695,000 | [1]
Level 2 | Recurring | Securities issued by the U.S. Treasury and Government |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 297,000 |  | 293,000 |
Level 2 | Recurring | Mortgage-backed securities |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 6,509,000 |  | 7,499,000 |
Level 2 | Recurring | Securities issued by states and political subdivisions |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 4,983,000 |  | 6,337,000 |
Level 2 | Recurring | Corporate debt securities |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 1,619,000 |  | 2,052,000 |
Level 2 | Recurring | Marketable equity securities |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value |  | 0 | [2] | 0 | [1]
Level 3 | Recurring | Securities issued by the U.S. Treasury and Government |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 0 |  | 0 |
Level 3 | Recurring | Mortgage-backed securities |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 0 |  | 0 |
Level 3 | Recurring | Securities issued by states and political subdivisions |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 0 |  | 0 |
Level 3 | Recurring | Corporate debt securities |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [1] | 0 |  | 0 |
Level 3 | Recurring | Marketable equity securities |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value |  | 0 | [2] | 0 | [1]
Mortgage Servicing Rights | Recurring |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [3] | 1,372,000 |  | 1,410,000 |
Mortgage Servicing Rights | Level 1 | Recurring |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [3] | 0 |  | 0 |
Mortgage Servicing Rights | Level 2 | Recurring |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [3] | 0 |  | 0 |
Mortgage Servicing Rights | Level 3 | Recurring |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [3] | 1,372,000 |  | 1,410,000 |
Forward loan sale commitments | Recurring |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [4] | (59,000) |  | 26,000 |
Forward loan sale commitments | Level 1 | Recurring |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [4] | 0 |  | 0 |
Forward loan sale commitments | Level 2 | Recurring |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [4] | 0 |  | 0 |
Forward loan sale commitments | Level 3 | Recurring |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [4] | (59,000) |  | 26,000 |
Interest rate lock commitments | Recurring |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [4] | (11,000) |  | 12,000 |
Interest rate lock commitments | Level 1 | Recurring |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [4] | 0 |  | 0 |
Interest rate lock commitments | Level 2 | Recurring |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [4] | 0 |  | 0 |
Interest rate lock commitments | Level 3 | Recurring |  |  |  |  |
Summary of Assets Measured at Fair Value on a Recurring Basis |  |  |  |  |
Assets fair value | [4] | $ (11,000) |  | $ 12,000 |
[1] | Unrealized gains or losses on investments are recorded in AOCI at each measurement date.
[2] | Unrealized gains or losses on investments are recorded in earnings at each measurement date.
[3] | Changes in the fair value of mortgage servicing rights are recognized in the current period earnings through net revenue.
[4] | Gains or losses on derivatives are recognized in current period earnings through cost of sales.

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