Goodwill and Intangible Assets - Goodwill Activity (Details) $ in Thousands	9 Months Ended
	Apr. 02, 2017 USD ($)
Goodwill
Balance, beginning of period (1)	$ 14,801
Balance, end of period	11,427
TeknaSeal | Discontinued Operations, Disposed of by Sale | Income From Discontinued Operations, Net of Tax
Goodwill
Sale of subsidiary (1)	(3,374)
Precision Components Group
Goodwill
Balance, beginning of period (1)	10,285
Sale of subsidiary (1)	(3,374)
Balance, end of period	6,911
3DMT Group
Goodwill
Balance, beginning of period (1)	2,804
Balance, end of period	2,804
Flanges and Fittings Group
Goodwill
Balance, beginning of period (1)	1,712
Balance, end of period	$ 1,712