Concentration of credit risk (Tables)

12 Months Ended

Jun. 30, 2023

Concentration Risk [Line Items]

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

Domestic and international sales from continuing operations are as follows:

(in thousands)	For the Years Ended June 30,
	2023				2022
Domestic	$	7,044	57.8	%	$	5,720	53.4	%
Foreign	5,136		42.2	%	4,983		46.6	%
Total	$	12,180	100.0	%	$	10,703	100.0	%