Annual reports filed by certain Canadian issuers pursuant to Section 15(d) and Rule 15d-4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Non-controlling interests (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Non-controlling interests (Details) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES    
Non-controlling interests $ 0 $ 0