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Fair Value Measurements (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands | Dec. 26, 2020 | Mar. 28, 2020
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Mortgage servicing rights | $ 831 | $ 1,225
Recurring | Residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 5,237 | 5,443
Recurring | Securities issued by states and political subdivisions |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 6,306 | 4,370
Recurring | Corporate debt securities |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 5,130 | 4,961
Recurring | Marketable equity securities |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 13,987 | 9,829
Recurring | Interest rate lock commitment derivatives |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Derivatives (asset) | 77 | 164
Recurring | Forward loan sale commitment derivatives |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Derivatives (liability) | (195) | (1,011)
Recurring | Mortgage servicing rights |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Mortgage servicing rights | 831 | 1,225
Level 1 | Recurring | Residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 0 | 0
Level 1 | Recurring | Securities issued by states and political subdivisions |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 0 | 0
Level 1 | Recurring | Corporate debt securities |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 0 | 0
Level 1 | Recurring | Marketable equity securities |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 13,987 | 9,829
Level 1 | Recurring | Interest rate lock commitment derivatives |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Derivatives (asset) | 0 | 0
Level 1 | Recurring | Forward loan sale commitment derivatives |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Derivatives (liability) | 0 | 0
Level 1 | Recurring | Mortgage servicing rights |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Mortgage servicing rights | 0 | 0
Level 2 | Recurring | Residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 5,237 | 5,443
Level 2 | Recurring | Securities issued by states and political subdivisions |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 6,306 | 4,370
Level 2 | Recurring | Corporate debt securities |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 5,130 | 4,961
Level 2 | Recurring | Marketable equity securities |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 0 | 0
Level 2 | Recurring | Interest rate lock commitment derivatives |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Derivatives (asset) | 0 | 0
Level 2 | Recurring | Forward loan sale commitment derivatives |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Derivatives (liability) | 0 | 0
Level 2 | Recurring | Mortgage servicing rights |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Mortgage servicing rights | 0 | 0
Level 3 | Recurring | Residential mortgage-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 0 | 0
Level 3 | Recurring | Securities issued by states and political subdivisions |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 0 | 0
Level 3 | Recurring | Corporate debt securities |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 0 | 0
Level 3 | Recurring | Marketable equity securities |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Investments | 0 | 0
Level 3 | Recurring | Interest rate lock commitment derivatives |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Derivatives (asset) | 77 | 164
Level 3 | Recurring | Forward loan sale commitment derivatives |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Derivatives (liability) | (195) | (1,011)
Level 3 | Recurring | Mortgage servicing rights |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Mortgage servicing rights | $ 831 | $ 1,225

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