Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 27, 2015 USD ($) segment	Dec. 28, 2014 USD ($)	Dec. 27, 2015 USD ($)	Dec. 28, 2014 USD ($)	Jun. 30, 2015 USD ($)
Segment information
Reportable business segments | segment	4
Sales	$ 25,028	$ 27,106	$ 49,517	$ 55,804
Operating costs	23,948	24,866	47,358	50,808
Segment operating income (loss):	309	1,457	580	2,765
Interest expense, net	(1,126)	(1,213)	(2,267)	(2,134)
Other non-operating income (expense)	91	(9)	94	(11)
Non-operating income (expense)	(1,035)	(1,222)	(2,173)	(2,145)
Consolidated (loss) income before income tax expense and non-controlling interest	(726)	235	(1,593)	620
Capital expenditures	710	989	1,339	3,446
Depreciation and amortization expense			4,750	4,666
Assets	121,761		121,761		$ 126,023
Long-lived assets	81,590		81,590		85,055
Corporate
Segment information
Segment operating income (loss):	(771)	(783)	(1,579)	(2,231)
Assets	28,669		28,669		23,290
Precision Components Group
Segment information
Capital expenditures	504	939	911	3,279
Precision Components Group | Total segments
Segment information
Sales	18,304	21,976	36,231	43,776
Operating costs	17,202	19,400	34,147	38,303
Segment operating income (loss):	1,102	2,576	2,084	5,473
Assets	69,830		69,830		78,675
3DMT Group
Segment information
Capital expenditures	197	50	419	167
3DMT Group | Total segments
Segment information
Sales	5,149	3,169	10,205	7,851
Operating costs	5,303	3,622	10,512	8,661
Segment operating income (loss):	(154)	(453)	(307)	(810)
Assets	21,147		21,147		21,567
Flanges and Fittings Group
Segment information
Capital expenditures	9		9
Flanges and Fittings Group | Total segments
Segment information
Sales	1,149	1,518	2,321	3,045
Operating costs	1,104	1,350	2,072	2,674
Segment operating income (loss):	45	168	249	371
Assets	1,095		1,095		1,528
Wireless Group | Total segments
Segment information
Sales	426	443	760	1,132
Operating costs	339	494	627	1,170
Segment operating income (loss):	87	$ (51)	133	$ (38)
Assets	$ 1,020		$ 1,020		$ 963