Accounting Policies - Other Various Policies (Details) - USD ($) $ in Thousands	12 Months Ended
Apr. 27, 2019	Apr. 28, 2018	Apr. 29, 2017
Cost of Sales
Improvement in gross margin due to legal settlement (as a percent)			0.20%
Pension Termination Charge.
Pension termination charge	$ 32,671
Research and Development Costs
Expenditures for research and development costs	9,100	$ 7,900	$ 8,000
Advertising Expenses
Gross advertising expenses	$ 106,400	$ 88,300	$ 82,100
Percentage reimbursement on shared advertising program	30.00%
Insurance/Self-Insurance
Maximum deductibles for excess loss coverages	$ 1,500

Insurance and Self Insurance Abstract

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Typical maximum deductible on various excess loss coverages, including auto, product, employee-related health care and workers' compensation liabilities.

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The amount of pension termination charge.

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- Definition

Represents the percentage improvement in gross margin resulting from a legal settlement.

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The percentage of the cost of a shared advertising program for which the entity is reimbursed.

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No definition available.

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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