Segment Information Business Optimization Charges Impact on Segment Income (Loss) by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Dec. 31, 2017	Jan. 01, 2017
Business Optimization Charges	$ 3,060	$ 0	$ 8,297	$ 0
Engines [Member]
Business Optimization Charges	2,016	0	4,347	0
Products [Member]
Business Optimization Charges	$ 1,044	$ 0	$ 3,950	$ 0