Revenue (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 29, 2019	Dec. 30, 2018
Commercial Engine Revenue			$ 89,279,000	$ 94,205,000
Commercial Product Revenue			175,907,000	171,349,000
Commercial Engine Eliminations			(12,974,000)	(8,926,000)
Total Commercial Revenue	$ 144,203,000	$ 150,494,000	252,212,000	256,628,000
Residential Engine			263,265,000	296,903,000
Residential Product Revenue			261,718,000	256,321,000
Residential Eliminations			(25,535,000)	(25,393,000)
Total Residential Revenue	293,738,000	354,968,000	499,448,000	527,831,000
Engine Revenue Total	219,190,000	272,018,000	352,544,000	391,108,000
Total Product Revenue	241,984,000	254,627,000	437,625,000	427,670,000
Total Eliminations	(23,233,000)	(21,183,000)	(38,509,000)	(34,319,000)
Revenues	437,941,000	505,462,000	751,660,000	784,459,000
tiered volume discount	3,700,000	1,200,000	5,900,000	2,400,000
Expected Value Rebate	400,000	1,100,000	2,100,000	1,900,000
Floor Plan Interest	$ 4,200,000	900,000	$ 5,400,000	$ 1,600,000
Retailer Bad Debt		$ 4,100,000