Quarterly report pursuant to Section 13 or 15(d)

Leases - Schedule of components of lease expenses (Details)

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Leases - Schedule of components of lease expenses (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Leases [Abstract]        
Operating lease cost $ 523 $ 388 $ 1,539 $ 1,103
Finance lease cost:        
Amortization of right-of-use assets 114 159 343 488
Interest on lease liabilities 3 13 15 48
Total finance lease cost $ 117 $ 172 $ 358 $ 536