Investments - Components (Details) - USD ($) $ in Thousands	Apr. 29, 2017	Apr. 30, 2016
Investments
Total investments	$ 53,677	$ 46,976
Investments to enhance returns on cash
Investments
Total investments	33,087	33,583
Investments to fund compensation/retirement plans
Investments
Total investments	13,690	13,393
Other investments
Investments
Total investments	6,900
Other current assets
Investments
Available-for-sale investments	15,040	13,491
Trading securities	6
Held-to-maturity investments	1,867	1,826
Total investments	16,913	15,317
Other long-term assets
Investments
Available-for-sale investments	31,264	31,659
Cost basis investment	5,500
Total investments	$ 36,764	$ 31,659

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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