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Customer-Funded Research & Development	6 Months Ended
Customer-Funded Research & Development	Oct. 27, 2018
Customer-Funded Research & Development
Customer-Funded Research & Development	10. Customer-Funded Research & Development Customer-funded R&D costs are incurred pursuant to contracts (revenue arrangements) to perform R&D activities according to customer specifications. These costs are direct contract costs and are expensed to cost of sales as costs are incurred. Revenue from customer-funded R&D contracts are recognized in accordance with Topic 606 over time as costs are incurred. Revenue from customer-funded R&D was approximately $18,790,000 and $35,907,000 for the three and six months ended October 27, 2018, respectively. Revenue from customer-funded R&D was approximately $11,864,000 and $20,662,000 for the three and six months ended October 28, 2017, respectively.