CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (276)	$ (526)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	1,233	1,174
Bad debt expense	42	37
Non-cash lease expense	36	0
Loss (gain) on disposal of property, plant and equipment	18	(2)
Stock-based compensation expense	303	375
Deferred tax expense (benefit)	207	(37)
Changes in operating assets and liabilities:
Accounts receivable	(364)	1,413
Inventory	(461)	101
Prepaid and other assets	(139)	16
Accounts payable and accrued liabilities	499	(111)
Contract asset and contract liability	235	(317)
NET CASH PROVIDED BY OPERATING ACTIVITIES	1,333	2,123
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property, plant and equipment	(649)	(800)
Cash proceeds from sale of property, plant and equipment	0	10
Additions to intangible assets	(254)	(58)
NET CASH USED IN INVESTING ACTIVITIES	(903)	(848)
CASH FLOWS FROM FINANCING ACTIVITIES
Repayments of long-term debt	(408)	(451)
NET CASH USED IN FINANCING ACTIVITIES	(408)	(451)
NET INCREASE IN CASH	22	824
CASH, beginning of period	5,155	4,675
CASH, end of period	5,177	5,499
SUPPLEMENTAL CASH FLOW DISCLOSURES:
Income taxes paid	31	3
Interest paid on long-term debt	68	64
NON-CASH INVESTING ACTIVITIES:
Issuance of common stock for lease	0	83
Transfer of equipment to inventory	236	166
Property, plant and equipment financed through accounts payable	16	89
Transfer of inventory to long-term	$ 1,079	$ 0