Annual report pursuant to Section 13 and 15(d)

Revenue - Schedule of Contract Assets and Liabilities (Details)

v3.21.1
Revenue - Schedule of Contract Assets and Liabilities (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Account receivables, net of allowance $ 9,659 $ 13,178
Account receivables, net of allowance Year-to-date Change (3,519)  
Unbilled receivables - current 14,453 7,984
Deferred revenue 4,614 $ 5,456
Deferred revenue Year-to-date Change $ (842)  
Year-to-date Change [Member]    
Changes in Account receivables, net of allowance, percentage (26.70%)  
Changes in Unbilled receivables - current, percentage 81.00%  
Changes in Deferred revenue, percentage (15.40%)  
Year-to-date Change [Member]    
Unbilled receivables - current $ 6,469