CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ (293)	$ 686
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	423	421
Bad debt expense	65	16
Inventory write-off	10	3
Loss on disposal of property, plant and equipment	1	0
Stock-based compensation expense	162	104
Income on derivative instrument	(5)	0
Deferred tax expense (benefit)	(103)	45
Changes in operating assets and liabilities:
Accounts receivable	1,095	(1,415)
Inventory	182	524
Prepaid and other assets	296	(67)
Accounts payable and accrued liabilities	(311)	(268)
Contract asset and contract liability	239	768
NET CASH PROVIDED BY OPERATING ACTIVITIES	1,761	817
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property, plant and equipment	(925)	(604)
Additions to intangible assets	(48)	(18)
NET CASH USED IN INVESTING ACTIVITIES	(973)	(622)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from exercise of stock options	225	28
Proceeds from long-term debt	508	309
Repayments of long-term debt	(152)	(128)
Payments of debt issuance costs	0	(50)
NET CASH PROVIDED BY FINANCING ACTIVITIES	581	159
NET INCREASE IN CASH	1,369	354
CASH, beginning of period	5,416	4,512
CASH, end of period	6,785	4,866
SUPPLEMENTAL CASH FLOW DISCLOSURES:
Income taxes paid, net of refunds	(283)	16
Interest paid on long-term debt	23	20
NON-CASH INVESTING ACTIVITIES:
Property, plant and equipment financed through accounts payable	$ 85	$ (13)