Amount of ownership interest provided by the borrower as collateral.

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It represents information about recorded reserve.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount, before allowance for credit loss, of financing receivable, classified as current.

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Notes Receivable (Details) $ in Thousands, ¥ in Millions	1 Months Ended			12 Months Ended
Notes Receivable (Details) $ in Thousands, ¥ in Millions	Sep. 30, 2020 USD ($)	Sep. 30, 2020 CNY (¥)	May 31, 2020 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Nov. 19, 2020	May 31, 2020 CNY (¥)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ownership held by the company's related party (as a percent)						27.00%
Proceeds from loan repayment				$ 1,529	$ 0
Zhu Note Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable provided			$ 1,400				¥ 10.0
Notes receivable			$ 1,500				10.5
Repayment period			1 month
Proceeds from loan repayment	$ 1,500	¥ 10.5
Fuzhou Note Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes receivable provided			$ 400				3.0
Notes receivable			$ 500				¥ 3.3
Repayment period			3 months
Recorded reserve			$ 500
Seven Stars Founder Space Industrial Pte. Ltd ("Founder Space")
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ownership held by the company's related party (as a percent)			50.00%				50.00%
Seven Stars Founder Space Industrial Pte. Ltd ("Founder Space") \| Zhu Note Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Ownership interest provided as collateral (as a percent)			50.00%				50.00%