CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Net sales:
Net sales	$ 42,314,000	$ 33,408,000	$ 81,807,000	$ 64,459,000
Cost of sales:
Cost of sales	27,960,000	21,965,000	52,887,000	39,560,000
Gross Profit	14,354,000	11,443,000	28,920,000	24,899,000
Operating expenses:
Research and development	2,222,000	1,978,000	4,650,000	3,909,000
Selling, general, and administrative expenses	7,804,000	8,195,000	16,294,000	15,541,000
Total Operating Expenses	10,026,000	10,173,000	20,944,000	19,450,000
Operating Income	4,328,000	1,270,000	7,976,000	5,449,000
Other income (expense):
Interest and other income (expense), net	187,000	58,000	84,000	75,000
Income before Provision for Income Taxes	4,515,000	1,328,000	8,060,000	9,428,000
Provision for Income Taxes	586,000	291,000	1,047,000	639,000
Net Income	$ 3,929,000	$ 1,037,000	$ 7,013,000	$ 8,789,000
Income per share:
Basic (in dollars per share)	$ 0.11	$ 0.03	$ 0.19	$ 0.24
Diluted (in dollars per share)	$ 0.11	$ 0.03	$ 0.19	$ 0.24
Weighted average number of shares outstanding:
Basic (in shares)	36,772,000	36,728,000	36,731,000	36,720,000
Diluted (in shares)	36,997,000	36,898,000	36,957,000	36,877,000
Equipment
Net sales:
Net sales	$ 27,434,000	$ 22,380,000	$ 53,121,000	$ 43,207,000
Cost of sales:
Cost of sales	26,295,000	20,571,000	49,561,000	36,743,000
Services
Net sales:
Net sales	14,880,000	11,028,000	28,686,000	21,252,000
Cost of sales:
Cost of sales	$ 1,665,000	$ 1,394,000	$ 3,326,000	$ 2,817,000