Note 12 - Operating Segments (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Jun. 30, 2022
Revenues	$ 15,993,000	$ 12,301,000
Product Concentration Risk [Member] | Revenue Benchmark [Member] | Non-US [Member]
Concentration Risk, Percentage	21.00%
Traditional Business [Member]
Revenues	$ 3,887,000		$ 3,787,000
Traditional Business [Member] | Transferred at Point in Time [Member]
Revenues	2,792,000		2,689,000
Traditional Business [Member] | Transferred over Time [Member]
Revenues	1,095,000		1,098,000
Journal Technologies [Member]
Revenues	$ 12,106,000		$ 8,514,000
Journal Technologies [Member] | Product Concentration Risk [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	76.00%		69.00%
Journal Technologies [Member] | Transferred at Point in Time [Member]
Revenues	$ 5,570,000		$ 4,121,000
Journal Technologies [Member] | Transferred over Time [Member]
Revenues	$ 6,536,000		$ 4,393,000