Segment Information Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Dec. 31, 2017	Jan. 01, 2017
Net Sales	$ 446,436	$ 428,236	$ 775,531	$ 715,034
Gross Profit	92,866	95,406	159,131	147,928
Segment Income (Loss)	17,088	25,385	252	9,072
International sales included in net sales based on product shipment destination	157,248	158,727	271,885	268,614
Engines [Member]
Net Sales	243,505	260,737	406,252	415,235
Gross Profit	55,429	61,573	86,648	92,559
Segment Income (Loss)	8,421	17,922	(11,437)	6,269
Products [Member]
Net Sales	222,080	190,701	408,676	341,497
Gross Profit	37,090	33,178	72,797	56,129
Segment Income (Loss)	8,320	6,808	12,003	3,563
Elimination [Member]
Net Sales	(19,149)	(23,202)	(39,397)	(41,698)
Gross Profit	347	655	(314)	(760)
Segment Income (Loss)	$ 347	$ 655	$ (314)	$ (760)