CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 214,000	$ (672,000)	$ (1,293,000)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	1,663,000	1,561,000	1,485,000
Bad debt expense	81,000	62,000	20,000
Non-cash lease expense	46,000	37,000	0
Inventory write-offs	55,000	0	0
Loss on disposal of property, plant and equipment	21,000	13,000	10,000
Stock-based compensation expense	400,000	476,000	496,000
Deferred tax expense (benefit)	251,000	(8,000)	0
Changes in operating assets and liabilities, net of effects of business acquisitions:
Accounts receivable	(3,000,000)	1,121,000	(1,264,000)
Inventory	(492,000)	305,000	(61,000)
Prepaid and other assets	(531,000)	(20,000)	(35,000)
Accounts payable and accrued liabilities	1,498,000	29,000	125,000
Contract asset and contract liability	719,000	(535,000)	(61,000)
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	925,000	2,369,000	(578,000)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of property, plant and equipment	(749,000)	(1,212,000)	(2,486,000)
Cash proceeds from sale of property, plant and equipment	0	10,000	23,000
Additions to intangible assets	(282,000)	(86,000)	(163,000)
Payments for business acquisition, net of cash acquired	0	0	(7,314,000)
NET CASH USED IN INVESTING ACTIVITIES	(1,031,000)	(1,288,000)	(9,940,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from exercise of stock options	0	0	342,000
Repayments of long-term debt	(537,000)	(601,000)	(3,184,000)
Proceeds from long-term debt	0	0	5,600,000
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(537,000)	(601,000)	2,758,000
NET INCREASE (DECREASE) IN CASH	(643,000)	480,000	(7,760,000)
CASH, beginning of year	5,155,000	4,675,000	12,435,000
CASH, end of year	4,512,000	5,155,000	4,675,000
SUPPLEMENTAL CASH FLOW DISCLOSURES:
Income taxes paid	37,000	3,000	9,000
Interest paid on long-term debt	89,000	87,000	107,000
NON-CASH INVESTING ACTIVITIES:
Issuance of common stock for acquisition	0	0	1,899,000
Issuance of common stock for lease	0	83,000	0
Transfer of equipment to inventory	393,000	193,000	118,000
Property, plant and equipment financed through accounts payable	$ 12,000	$ (13,000)	$ 28,000