Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

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+ Details

Related Party Transactions - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Sep. 30, 2021
Related Party Transaction [Line Items]
Amounts due to related parties	$ 4,360	$ 0
Executive Chairman And Director
Related Party Transaction [Line Items]
Outstanding loans	600
Jinzhuo Hengbang Technology (Beijing) Co., Ltd.
Related Party Transaction [Line Items]
Amounts due to related parties	3,700
Sina Corporation
Related Party Transaction [Line Items]
Payments of guarantee deposit on loan borrowed	$ 3,700