Concentration of credit risk (Tables)

12 Months Ended

Jun. 30, 2022

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,
	2022				2021
Domestic	$	5,720	53.4	%	$	6,255	59.7	%
Foreign	4,983		46.6	%	4,217		40.3	%
Total	$	10,703	100.0	%	$	10,472	100.0	%