Segment Information - Summarized (Details) $ in Thousands	3 Months Ended
	Oct. 02, 2016 USD ($) segment	Sep. 27, 2015 USD ($)
Segment information
Reportable business segments | segment	4
Sales	$ 26,826	$ 23,631
Operating costs	25,486	22,726
Segment operating (loss) income	(48)	97
Interest expense, net	(1,107)	(1,140)
Loss on extinguishment of debt	(723)
Other (expense) income, net	(33)	3
Non-operating expense	(1,863)	(1,137)
Loss before income taxes	(1,911)	(1,040)
Corporate
Segment information
Segment operating (loss) income	(1,388)	(808)
Precision Components Group | Total segments
Segment information
Sales	19,332	17,069
Operating costs	17,435	16,261
Segment operating (loss) income	1,897	808
3DMT Group | Total segments
Segment information
Sales	6,141	5,056
Operating costs	6,823	5,209
Segment operating (loss) income	(682)	(153)
Flanges and Fittings Group | Total segments
Segment information
Sales	1,113	1,172
Operating costs	983	968
Segment operating (loss) income	130	204
Wireless Group | Total segments
Segment information
Sales	240	334
Operating costs	245	288
Segment operating (loss) income	$ (5)	$ 46