Segment Information Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 29, 2019	Dec. 30, 2018
Net Sales	$ 437,941	$ 505,462	$ 751,660	$ 784,459
Gross Profit	68,025	92,457	111,271	136,211
Segment Income (Loss)	(10,153)	8,335	(44,381)	(45,797)
International sales included in net sales based on product shipment destination	144,019	148,125	246,635	236,651
Engines [Member]
Net Sales	219,190	272,018	352,544	391,108
Gross Profit	33,192	55,614	52,334	71,551
Segment Income (Loss)	(14,248)	4,658	(42,152)	(39,593)
Products [Member]
Net Sales	241,984	254,627	437,625	427,670
Gross Profit	35,179	37,577	59,997	65,213
Segment Income (Loss)	4,441	4,411	(1,169)	(5,651)
Elimination [Member]
Net Sales	(23,233)	(21,183)	(38,509)	(34,319)
Gross Profit	(346)	(734)	(1,060)	(553)
Segment Income (Loss)	$ (346)	$ (734)	$ (1,060)	$ (553)