CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Net sales:
Revenues	$ 33,408,000	$ 27,205,000	$ 64,459,000	$ 50,378,000
Cost of sales:
Cost of sales	21,965,000	15,802,000	39,560,000	28,283,000
Gross Profit	11,443,000	11,403,000	24,899,000	22,095,000
Operating expenses:
Research and development	1,978,000	1,884,000	3,909,000	3,773,000
Selling, general, and administrative expenses	8,195,000	5,850,000	15,541,000	11,999,000
Total Operating Expenses	10,173,000	7,734,000	19,450,000	15,772,000
Operating Income	1,270,000	3,669,000	5,449,000	6,323,000
Other income (expense):
Interest and other income (expense), net	58,000	(3,000)	75,000	(9,000)
Gain on extinguishment of debt			3,904,000
Income before Provision for Income Taxes	1,328,000	3,666,000	9,428,000	6,314,000
Provision for Income Taxes	291,000	469,000	639,000	798,000
Net Income	$ 1,037,000	$ 3,197,000	$ 8,789,000	$ 5,516,000
Income per share:
Basic (in dollars per share)	$ 0.03	$ 0.09	$ 0.24	$ 0.15
Diluted (in dollars per share)	$ 0.03	$ 0.09	$ 0.24	$ 0.15
Weighted average number of shares outstanding:
Basic (in shares)	36,728,000	36,695,000	36,720,000	36,695,000
Diluted (in shares)	36,898,000	36,805,000	36,877,000	36,794,000
Equipment
Net sales:
Revenues	$ 22,380,000	$ 19,016,000	$ 43,207,000	$ 34,914,000
Cost of sales:
Cost of sales	20,571,000	14,599,000	36,743,000	25,906,000
Services
Net sales:
Revenues	11,028,000	8,189,000	21,252,000	15,464,000
Cost of sales:
Cost of sales	$ 1,394,000	$ 1,203,000	$ 2,817,000	$ 2,377,000