CONSOLIDATED STATEMENTS OF INCOME - USD ($)	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Net sales:
Revenues	$ 114,035,000	$ 101,359,000	$ 102,932,000
Cost of sales:
Cost of sales	63,287,000	58,515,000	58,732,000
Gross Profit	50,748,000	42,844,000	44,200,000
Operating expenses:
Research and development	7,620,000	7,257,000	7,212,000
Selling, general, and administrative expenses	25,196,000	23,670,000	23,212,000
Impairment of intangible asset		1,852,000
Total Operating Expenses	32,816,000	32,779,000	30,424,000
Operating Income	17,932,000	10,065,000	13,776,000
Other expense:
Interest and other expense, net	5,000	9,000	21,000
Income before Provision for Income Taxes	17,927,000	10,056,000	13,755,000
Provision for Income Taxes	2,514,000	2,261,000	1,274,000
Net Income	$ 15,413,000	$ 7,795,000	$ 12,481,000
Income per share:
Basic (in dollars per share)	$ 0.42	$ 0.21	$ 0.34
Diluted (in dollars per share)	$ 0.42	$ 0.21	$ 0.34
Weighted average number of shares outstanding:
Basic (in shares)	36,696,000	36,888,000	37,148,000
Diluted (in shares)	36,808,000	36,986,000	37,248,000
Equipment
Net sales:
Revenues	$ 80,131,000	$ 77,314,000	$ 85,505,000
Cost of sales:
Cost of sales	58,401,000	54,182,000	54,930,000
Services
Net sales:
Revenues	33,904,000	24,045,000	17,427,000
Cost of sales:
Cost of sales	$ 4,886,000	$ 4,333,000	$ 3,802,000