CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (790)	$ (293)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	582	423
Bad debt expense	25	65
Inventory write-off	0	10
Loss on disposal of property, plant and equipment	0	1
Stock-based compensation expense	280	162
Income associated with derivative instrument	(7)	(5)
Deferred tax benefit	(256)	(103)
Changes in operating assets and liabilities:
Accounts receivable	(134)	1,095
Inventory	(1,151)	182
Prepaid and other assets	(305)	296
Accounts payable and accrued liabilities	(116)	(311)
Contract asset and contract liability	(1,179)	239
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	(3,051)	1,761
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property, plant and equipment	(47)	(925)
Additions to intangible assets	(18)	(48)
NET CASH USED IN INVESTING ACTIVITIES	(65)	(973)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from exercise of stock options	0	225
Proceeds from issuance of common stock, net	16,771	0
Proceeds from long-term debt	0	508
Repayments of long-term debt	(206)	(152)
Payments on financing lease liabilities	(54)	0
NET CASH PROVIDED BY FINANCING ACTIVITIES	16,511	581
NET INCREASE IN CASH	13,395	1,369
CASH, beginning of period	27,767	5,416
CASH, end of period	41,162	6,785
SUPPLEMENTAL CASH FLOW DISCLOSURES:
Income taxes paid, net of refunds	170	(283)
Interest paid on long-term debt	58	23
NON-CASH INVESTING AND FINANCING ACTIVITIES:
Property, plant and equipment financed through accounts payable	$ 20	$ 85