The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Percentage of fair value of reporting unit in excess of carrying amount.

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Goodwill and Intangible Assets -Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 28, 2018	Apr. 29, 2017	Apr. 30, 2016
Goodwill
Impairment of intangible assets	$ 0	$ 830	$ 0
Amortization of Intangible Assets	$ 1,330	$ 2,546	$ 295
Commerical
Goodwill
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	20.00%
Live Events
Goodwill
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	2.00%
High School Park and Recreation
Goodwill
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	20.00%
Transportation
Goodwill
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	20.00%
International
Goodwill
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	20.00%