$ 20,874

$ 32,607

the German bank includes a $13.0 million (EUR11 million) 8-year maturity term loan and a $4.7 million (EUR4 million) revolving facility (“German Bank Facility Agreement”). The interest rate of the 8-year maturity term loan is EURIBOR plus a margin rate determined by the financial leverage ratio of the Group. The $4.7 million (EUR4 million) revolving facility at 6.00% annual interest, needs to be renewed every year (60 days in advance). During the nine months ended September 30, 2021, the Group drew down the 8-year maturity term loan to the amount of $9,660.

Bank Borrowings (Details) [Line Items]

Interest rate

6.00%

5.66%

Bank Borrowings (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Bank Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Bank Borrowings (Details) [Line Items]
Guarantee to secure certain loan		$ 20,874	$ 32,607
Loan balance	$ 13,191
Bank facility agreement, description	the German bank includes a $13.0 million (EUR11 million) 8-year maturity term loan and a $4.7 million (EUR4 million) revolving facility (“German Bank Facility Agreement”). The interest rate of the 8-year maturity term loan is EURIBOR plus a margin rate determined by the financial leverage ratio of the Group. The $4.7 million (EUR4 million) revolving facility at 6.00% annual interest, needs to be renewed every year (60 days in advance). During the nine months ended September 30, 2021, the Group drew down the 8-year maturity term loan to the amount of $9,660.
Minimum [Member]
Bank Borrowings (Details) [Line Items]
Interest rate	5.00%	4.68%
Maximum [Member]
Bank Borrowings (Details) [Line Items]
Interest rate	6.00%	5.66%