CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 686	$ 70
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	421	391
Bad debt expense	16	17
Non-cash lease expense		12
Inventory write-off	3	0
Stock-based compensation expense	104	101
Deferred tax expense	45	33
Changes in operating assets and liabilities:
Accounts receivable	(1,415)	(447)
Inventory	524	(39)
Prepaid and other assets	(67)	(16)
Accounts payable and accrued liabilities	(268)	365
Contract asset and contract liability	768	(101)
NET CASH PROVIDED BY OPERATING ACTIVITIES	817	386
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property, plant and equipment	(604)	(79)
Additions to intangible assets	(18)	(163)
NET CASH USED IN INVESTING ACTIVITIES	(622)	(242)
CASH FLOWS FROM FINANCING ACTIVITIES
Total liabilities	19,001
Proceeds from exercise of stock options	28	0
Proceeds from long-term debt	309	0
Repayments of long-term debt	(128)	(150)
Payments of debt issuance costs	(50)	0
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	159	(150)
NET INCREASE (DECREASE) IN CASH	354	(6)
CASH, beginning of period	4,512	5,155
CASH, end of period	4,866	5,149
SUPPLEMENTAL CASH FLOW DISCLOSURES:
Income taxes paid	16	8
Interest paid on long-term debt	20	24
NON-CASH INVESTING ACTIVITIES:
Transfer of equipment to inventory	0	119
Property, plant and equipment financed through accounts payable	$ (13)	$ 17