Segment Information - Summarized (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2017 USD ($) segment	Jun. 30, 2016 USD ($)
Segment information
Reportable business segments | segment	3
Sales	$ 99,069	$ 94,124
Operating costs	106,416	90,046
Segment operating income (loss)	(12,744)	462
Interest expense, net	(4,008)	(4,449)
Loss on extinguishment of debt	(723)
Other income, net	670	171
Non-operating expense	(4,061)	(4,278)
Loss before income taxes	(16,805)	(3,816)
Capital expenditures	6,641	2,633
Depreciation and amortization expense	9,930	9,529
Total assets	99,623	120,512
Corporate
Segment information
Segment operating income (loss)	(5,397)	(3,616)
Total assets	30,889	27,488
Precision Components Group
Segment information
Capital expenditures	4,710	2,016
Depreciation and amortization expense	6,750	6,698
Precision Components Group | Total segments
Segment information
Sales	75,053	68,573
Operating costs	80,133	64,364
Segment operating income (loss)	(5,080)	4,209
Total assets	50,641	69,623
Stamping Group
Segment information
Capital expenditures	1,292	477
Depreciation and amortization expense	2,323	2,249
Stamping Group | Total segments
Segment information
Sales	21,061	22,383
Operating costs	21,766	21,751
Segment operating income (loss)	(705)	632
Total assets	19,944	21,841
3DMT Group
Segment information
Capital expenditures	568	119
Depreciation and amortization expense	765	490
3DMT Group | Total segments
Segment information
Sales	2,528	1,659
Operating costs	3,963	2,541
Segment operating income (loss)	(1,435)	(882)
Total assets	(3,033)	(725)
Flanges and Fittings Group
Segment information
Capital expenditures	71	21
Depreciation and amortization expense	73	71
Flanges and Fittings Group | Total segments
Segment information
Total assets	1,182	1,279
Wireless Group
Segment information
Depreciation and amortization expense	19	21
Wireless Group | Total segments
Segment information
Sales	427	1,509
Operating costs	554	1,390
Segment operating income (loss)	$ (127)	119
Total assets		$ 1,006