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Revenue - Schedule of Deferred Contract Costs (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Movement In Capitalized Contract Cost [Roll Forward]    
Beginning balance $ 40,388  
Additions to deferred contract costs 16,701  
Amortization of deferred contract costs (7,853) $ (4,627)
Ending balance $ 49,236