XML 85 R73.htm IDEA: XBRL DOCUMENT v3.21.2
Non-marketable equity securities (Details)
1 Months Ended 3 Months Ended 6 Months Ended
Apr. 21, 2021
USD ($)
Apr. 21, 2021
CNY (¥)
Jun. 30, 2021
USD ($)
Jun. 30, 2021
USD ($)
Jun. 30, 2020
USD ($)
Jul. 20, 2021
Non-marketable equity securities (Details) [Line Items]            
Percentage of Acquired equity interests     81.56% 81.56%   81.56%
Impairment of non-marketable securities     $ 690,542 $ 690,542  
CBAK Power [Member]            
Non-marketable equity securities (Details) [Line Items]            
Cash paid $ 1,390,000 ¥ 9,000,000        
Percentage of Acquired equity interests 9.74% 9.74%