Note 9 - Segment Information and Disaggregated Revenue (Details Textual) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)
Number of Reportable Segments			2
Revenue from Contract with Customer, Including Assessed Tax	$ 15,634	$ 17,072	$ 42,979	$ 46,501
Europe and Canada [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 2,562	$ 2,333	$ 7,139	$ 5,550