Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Contract Balances (Details)

v3.20.4
Summary of Significant Accounting Policies - Contract Balances (Details) - USD ($)
$ in Thousands
 24 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Accounting Policies [Abstract]    
Net Receivables, Opening balance $ 15,321  
Net Receivables, Closing balance 17,618 $ 16,944
Increase/(decrease) 674 1,623
Contract Liabilities, Current, Opening balance 18  
Contract Liabilities, Current, Closing balance 14 14
Increase/(decrease) 0 (4)
Contract Liabilities, Long-Term, Opening balance 42  
Contract Liabilities, Long-Term, Closing balance 3 15
Increase/(decrease) $ (12) $ (27)