Concentration of credit risk (Tables)

6 Months Ended

Dec. 31, 2023

Concentration of credit risks [Abstract]

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

Domestic and international sales from operations are as follows:

(in thousands)	For the Three Months Ended December 31,								For the Six Months Ended December 31,
	2023				2022				2023				2022
Domestic	$	1,536	54	%	$	1,735	52	%	$	3,059	53	%	$	3,354	60	%
Foreign	1,333		46	%	1,271		48	%	2,755		47	%	2,256		40	%
Total	$	2,869	100	%	$	3,005	100	%	$	5,814	100	%	$	5,610	100	%