Concentration of credit risk (Tables)

9 Months Ended

Mar. 31, 2024

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 March 31,								For the Nine Months Ended March 31,
	2024				2023				2024				2023
Domestic	$	1,339	50	%	$	1,903	55	%	$	4,394	52	%	$	5,258	58	%
Foreign	1,357		50	%	1,531		45	%	4,116		48	%	3,787		42	%
Total	$	2,696	100	%	$	3,434	100	%	$	8,510	100	%	$	9,045	100	%