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FAIR VALUE - Asset Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 27, 2021	Mar. 28, 2020
Money market funds | Cash and Cash Equivalents
Fair Value
Investments at fair value	$ 500
Money market funds | Restricted Investments
Fair Value
Investments at fair value	300
Fixed Income | Restricted Investments
Fair Value
Investments at fair value	16,900
Mutual funds, equity and alternative investments | Investments
Fair Value
Investments at fair value	31,400
Money market and mutual funds | Other Assets
Fair Value
Investments at fair value	600
Ardellis Insurance Ltd.
Fair Value
Total Fair Value	47,949	$ 33,139
Estimate of Fair Value Measurement | Recurring
Fair Value
Investments at fair value	49,721	64,344
Assets at fair value	49,721	64,344
Estimate of Fair Value Measurement | Recurring | Money market funds
Fair Value
Investments at fair value	1,146	30,398
Estimate of Fair Value Measurement | Recurring | Fixed Income
Fair Value
Investments at fair value	16,508	15,361
Estimate of Fair Value Measurement | Recurring | Equity
Fair Value
Investments at fair value	18,496	9,089
Estimate of Fair Value Measurement | Recurring | Alternative Investments
Fair Value
Investments at fair value	2,126	1,960
Estimate of Fair Value Measurement | Recurring | Mutual Fund
Fair Value
Investments at fair value	11,445	7,536
Estimate of Fair Value Measurement | Recurring | Domestic stock
Fair Value
Investments at fair value	9,388	5,204
Estimate of Fair Value Measurement | Recurring | International stock funds
Fair Value
Investments at fair value	1,395	947
Estimate of Fair Value Measurement | Recurring | Target funds
Fair Value
Investments at fair value	21	242
Estimate of Fair Value Measurement | Recurring | Bond funds
Fair Value
Investments at fair value	145	222
Estimate of Fair Value Measurement | Recurring | Alternative funds
Fair Value
Investments at fair value	496	921
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1)
Fair Value
Investments at fair value	30,204	46,423
Assets at fair value	30,204	46,423
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Money market funds
Fair Value
Investments at fair value	19	29,561
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Fixed Income
Fair Value
Investments at fair value	244	237
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Equity
Fair Value
Investments at fair value	18,496	9,089
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Mutual Fund
Fair Value
Investments at fair value	11,445	7,536
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Domestic stock
Fair Value
Investments at fair value	9,388	5,204
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | International stock funds
Fair Value
Investments at fair value	1,395	947
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Target funds
Fair Value
Investments at fair value	21	242
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Bond funds
Fair Value
Investments at fair value	145	222
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Alternative funds
Fair Value
Investments at fair value	496	921
Estimate of Fair Value Measurement | Recurring | Prices with Other Observable Inputs (Level 2)
Fair Value
Investments at fair value	17,391	15,961
Assets at fair value	17,391	15,961
Estimate of Fair Value Measurement | Recurring | Prices with Other Observable Inputs (Level 2) | Money market funds
Fair Value
Investments at fair value	1,127	837
Estimate of Fair Value Measurement | Recurring | Prices with Other Observable Inputs (Level 2) | Fixed Income
Fair Value
Investments at fair value	16,264	15,124
Estimate of Fair Value Measurement | Recurring | Prices with Unobservable Inputs (Level 3)
Fair Value
Investments at fair value	2,126	1,960
Assets at fair value	2,126	1,960
Estimate of Fair Value Measurement | Recurring | Prices with Unobservable Inputs (Level 3) | Alternative Investments
Fair Value
Investments at fair value	$ 2,126	$ 1,960

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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