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Investments (Contractual Maturities) (Details) - USD ($) $ in Thousands | Dec. 26, 2020 | Mar. 28, 2020
--- | --- | ---
Amortized Cost |  |
Due in less than one year | $ 601 |
Due after one year through five years | 8,335 |
Due after five years through ten years | 1,025 |
Due after ten years | 1,312 |
Mortgage-backed securities | 5,209 |
Amortized Cost | 16,482 | $ 14,660
Fair Value |  |
Due in less than one year | 603 |
Due after one year through five years | 8,375 |
Due after five years through ten years | 1,097 |
Due after ten years | 1,361 |
Mortgage-backed securities | 5,237 |
Fair Value | $ 16,673 | $ 14,774

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