CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) $ in Thousands	9 Months Ended
	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 100	$ (276)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	1,191	1,233
Bad debt expense	91	42
Non-cash lease expense		36
Inventory write-off	13	0
Loss on disposal of property, plant and equipment	6	18
Stock-based compensation expense	372	303
Deferred tax expense	211	207
Changes in operating assets and liabilities:
Accounts receivable	(367)	(364)
Inventory	(1,034)	(461)
Prepaid and other assets	(700)	(139)
Accounts payable and accrued liabilities	692	499
Contract asset and contract liability	947	235
NET CASH PROVIDED BY OPERATING ACTIVITIES	1,522	1,333
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property, plant and equipment	(2,500)	(649)
Proceeds from sale of property, plant and equipment	3	0
Additions to intangible assets	(121)	(254)
NET CASH USED IN INVESTING ACTIVITIES	(2,618)	(903)
CASH FLOWS FROM FINANCING ACTIVITIES
Total liabilities	21,066
Proceeds from exercise of stock options	576	0
Proceeds from long-term debt	1,343	0
Repayments of long-term debt	(387)	(408)
Payments of debt issuance costs	(50)	0
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	1,482	(408)
NET INCREASE IN CASH	386	22
CASH, beginning of period	4,512	5,155
CASH, end of period	4,898	5,177
SUPPLEMENTAL CASH FLOW DISCLOSURES:
Income taxes paid	90	31
Interest paid on long-term debt	32	68
NON-CASH INVESTING ACTIVITIES:
Transfer of equipment to inventory	0	236
Property, plant and equipment financed through accounts payable	$ 46	$ 16