FAIR VALUE - Asset Measured at Fair Value (Details) - Estimate of Fair Value Measurement - Recurring - USD ($) $ in Thousands	Mar. 30, 2019	Mar. 31, 2018
Fair Value
Investments at fair value	$ 30,904	$ 25,176
Assets at fair value	30,904	25,176
Money market funds
Fair Value
Investments at fair value	605	4,809
Fixed Income
Fair Value
Investments at fair value	13,623	9,270
Equity
Fair Value
Investments at fair value	8,258	7,202
Hedge funds
Fair Value
Investments at fair value	1,782
Mutual Fund
Fair Value
Investments at fair value	6,636	3,895
Domestic stock funds
Fair Value
Investments at fair value	2,151	1,158
International stock funds
Fair Value
Investments at fair value	2,085	1,159
Target funds
Fair Value
Investments at fair value	257	1,024
Bond funds
Fair Value
Investments at fair value	799	554
Alternative funds
Fair Value
Investments at fair value	1,344
Quoted Prices in Active Markets (Level 1)
Fair Value
Investments at fair value	18,810	12,231
Assets at fair value	18,810	12,231
Quoted Prices in Active Markets (Level 1) | Money market funds
Fair Value
Investments at fair value	56	65
Quoted Prices in Active Markets (Level 1) | Fixed Income
Fair Value
Investments at fair value	3,860	2,159
Quoted Prices in Active Markets (Level 1) | Equity
Fair Value
Investments at fair value	8,258	7,202
Quoted Prices in Active Markets (Level 1) | Mutual Fund
Fair Value
Investments at fair value	6,636	2,805
Quoted Prices in Active Markets (Level 1) | Domestic stock funds
Fair Value
Investments at fair value	2,151	1,158
Quoted Prices in Active Markets (Level 1) | International stock funds
Fair Value
Investments at fair value	2,085	1,159
Quoted Prices in Active Markets (Level 1) | Target funds
Fair Value
Investments at fair value	257	281
Quoted Prices in Active Markets (Level 1) | Bond funds
Fair Value
Investments at fair value	799	207
Quoted Prices in Active Markets (Level 1) | Alternative funds
Fair Value
Investments at fair value	1,344
Prices with Other Observable Inputs (Level 2)
Fair Value
Investments at fair value	10,312	12,945
Assets at fair value	10,312	12,945
Prices with Other Observable Inputs (Level 2) | Money market funds
Fair Value
Investments at fair value	549	4,744
Prices with Other Observable Inputs (Level 2) | Fixed Income
Fair Value
Investments at fair value	9,763	7,111
Prices with Other Observable Inputs (Level 2) | Mutual Fund
Fair Value
Investments at fair value		1,090
Prices with Other Observable Inputs (Level 2) | Target funds
Fair Value
Investments at fair value		743
Prices with Other Observable Inputs (Level 2) | Bond funds
Fair Value
Investments at fair value		$ 347
Prices with Unobservable Inputs (Level 3)
Fair Value
Investments at fair value	1,782
Assets at fair value	1,782
Prices with Unobservable Inputs (Level 3) | Hedge funds
Fair Value
Investments at fair value	$ 1,782