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Debt - Chinese Credit Facility - Additional Information (Details) - Chinese Credit Facility - Chinese Credit Facility Boa - USD ($)
6 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Debt Instrument [Line Items]    
Borrowing capacity under Credit Facility   $ 30,000,000
Period of credit facility 1 year  
Outstanding borrowings $ 0 $ 0