Condensed Consolidated Statements Shareholders' Equity - USD ($) $ in Thousands	Total	Common Shares [Member]	Additional Paid-in Capital [Member]	Retained Earnings (Loss) [Member]	Accumulated Other Comprehensive Loss [Member]
Beginning Balance at Jun. 30, 2020	$ 13,743	$ 3,450	$ 10,714	$ (82)	$ (339)
Beginning Balance,Shares at Jun. 30, 2020		6,899,000
Net earnings	(340)			(340)
Ending Balance at Sep. 30, 2020	13,403	$ 3,450	10,714	(422)	(339)
Ending Balance, Shares at Sep. 30, 2020		6,899,000
Beginning Balance at Jun. 30, 2020	13,743	$ 3,450	10,714	(82)	(339)
Beginning Balance,Shares at Jun. 30, 2020		6,899,000
Net earnings	2,734
Ending Balance at Dec. 31, 2020	16,477	$ 3,450	10,714	2,652	(339)
Ending Balance, Shares at Dec. 31, 2020		6,899,000
Beginning Balance at Sep. 30, 2020	13,403	$ 3,450	10,714	(422)	(339)
Beginning Balance,Shares at Sep. 30, 2020		6,899,000
Net earnings	3,074			3,074
Ending Balance at Dec. 31, 2020	16,477	$ 3,450	10,714	2,652	(339)
Ending Balance, Shares at Dec. 31, 2020		6,899,000
Beginning Balance at Jun. 30, 2021	$ 20,810	$ 3,463	10,700	6,809	(162)
Beginning Balance,Shares at Jun. 30, 2021	6,924,000	6,924,000
Net earnings	$ 1,939			1,939
Ending Balance at Sep. 30, 2021	22,749	$ 3,463	10,700	8,748	(162)
Ending Balance, Shares at Sep. 30, 2021		6,924,000
Beginning Balance at Jun. 30, 2021	$ 20,810	$ 3,463	10,700	6,809	(162)
Beginning Balance,Shares at Jun. 30, 2021	6,924,000	6,924,000
Net earnings	$ 1,346
Share options exercised, Shares	30,000
Ending Balance at Dec. 31, 2021	$ 22,207	$ 3,478	10,736	8,155	(162)
Ending Balance, Shares at Dec. 31, 2021	6,954,000	6,954,000
Beginning Balance at Sep. 30, 2021	$ 22,749	$ 3,463	10,700	8,748	(162)
Beginning Balance,Shares at Sep. 30, 2021		6,924,000
Net earnings	(593)			(593)
Share options exercised	$ 51	$ 15	36
Share options exercised, Shares	30,000	30,000
Ending Balance at Dec. 31, 2021	$ 22,207	$ 3,478	$ 10,736	$ 8,155	$ (162)
Ending Balance, Shares at Dec. 31, 2021	6,954,000	6,954,000