Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
Apr. 30, 2022	May 01, 2021	May 02, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 610,970	$ 482,033	$ 608,932
Goods/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Net sales	307,807	237,576	285,701
Goods/services transferred over time
Disaggregation of Revenue [Line Items]
Net sales	303,163	244,457	323,231
Unique configuration
Disaggregation of Revenue [Line Items]
Net sales	256,620	202,139	278,405
Limited configuration
Disaggregation of Revenue [Line Items]
Net sales	301,050	234,069	279,224
Service and other
Disaggregation of Revenue [Line Items]
Net sales	53,300	45,825	51,303
Commercial
Disaggregation of Revenue [Line Items]
Net sales	154,211	127,300	152,627
Commercial \| Goods/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Net sales	120,776	98,243	105,096
Commercial \| Goods/services transferred over time
Disaggregation of Revenue [Line Items]
Net sales	33,435	29,057	47,531
Commercial \| Unique configuration
Disaggregation of Revenue [Line Items]
Net sales	20,849	16,535	35,212
Commercial \| Limited configuration
Disaggregation of Revenue [Line Items]
Net sales	118,308	96,420	102,847
Commercial \| Service and other
Disaggregation of Revenue [Line Items]
Net sales	15,054	14,345	14,568
Live Events
Disaggregation of Revenue [Line Items]
Net sales	199,106	143,049	196,591
Live Events \| Goods/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Net sales	37,229	23,906	39,521
Live Events \| Goods/services transferred over time
Disaggregation of Revenue [Line Items]
Net sales	161,877	119,143	157,070
Live Events \| Unique configuration
Disaggregation of Revenue [Line Items]
Net sales	144,095	104,682	140,044
Live Events \| Limited configuration
Disaggregation of Revenue [Line Items]
Net sales	30,181	18,679	31,897
Live Events \| Service and other
Disaggregation of Revenue [Line Items]
Net sales	24,830	19,688	24,650
High School Park and Recreation
Disaggregation of Revenue [Line Items]
Net sales	111,816	91,557	96,414
High School Park and Recreation \| Goods/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Net sales	82,678	60,859	68,582
High School Park and Recreation \| Goods/services transferred over time
Disaggregation of Revenue [Line Items]
Net sales	29,138	30,698	27,832
High School Park and Recreation \| Unique configuration
Disaggregation of Revenue [Line Items]
Net sales	20,175	22,258	19,176
High School Park and Recreation \| Limited configuration
Disaggregation of Revenue [Line Items]
Net sales	88,162	66,697	74,266
High School Park and Recreation \| Service and other
Disaggregation of Revenue [Line Items]
Net sales	3,479	2,602	2,972
Transportation
Disaggregation of Revenue [Line Items]
Net sales	62,707	58,284	70,139
Transportation \| Goods/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Net sales	22,088	20,180	25,157
Transportation \| Goods/services transferred over time
Disaggregation of Revenue [Line Items]
Net sales	40,619	38,104	44,982
Transportation \| Unique configuration
Disaggregation of Revenue [Line Items]
Net sales	38,843	36,398	43,519
Transportation \| Limited configuration
Disaggregation of Revenue [Line Items]
Net sales	21,370	19,690	24,588
Transportation \| Service and other
Disaggregation of Revenue [Line Items]
Net sales	2,494	2,196	2,032
International
Disaggregation of Revenue [Line Items]
Net sales	83,130	61,843	93,161
International \| Goods/services transferred at a point in time
Disaggregation of Revenue [Line Items]
Net sales	45,036	34,388	47,345
International \| Goods/services transferred over time
Disaggregation of Revenue [Line Items]
Net sales	38,094	27,455	45,816
International \| Unique configuration
Disaggregation of Revenue [Line Items]
Net sales	32,658	22,266	40,454
International \| Limited configuration
Disaggregation of Revenue [Line Items]
Net sales	43,029	32,583	45,626
International \| Service and other
Disaggregation of Revenue [Line Items]
Net sales	$ 7,443	$ 6,994	$ 7,081