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Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares
Sep. 30, 2021
Jun. 30, 2021
Statement Of Financial Position [Abstract]    
Preferred shares, authorized 2,000,000 2,000,000
Preferred shares, unissued 2,000,000 2,000,000
Common shares, without par value
Common shares, issued 6,924,000 6,924,000
Common shares, outstanding 6,924,000 6,924,000