Investments - Components (Details) - USD ($) $ in Thousands	Oct. 29, 2016	Apr. 30, 2016
Investments
Total investments	$ 51,018	$ 46,976
Investments to enhance returns on cash
Investments
Total investments	31,179	33,583
Investments to fund compensation/retirement plans
Investments
Total investments	13,589	13,393
Other investments
Investments
Total investments	6,250
Other current assets
Investments
Available-for-sale investments	13,615	13,491
Trading securities	434
Held-to-maturity investments	1,815	1,826
Total investments	15,864	15,317
Other long-term assets
Investments
Available-for-sale investments	29,654	31,659
Cost basis investment	5,500
Total investments	$ 35,154	$ 31,659

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

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