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Deferred Revenue - Schedule of Changes in Deferred Revenue (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2020
Revenue From Contract With Customer [Abstract]    
Deferred revenue balance at December 31, 2019   $ 280,326
Additions to deferred revenue during the period   26,434
Revenue recognized during the period $ 61,600 (69,823)
Deferred revenue balance at December 31, 2020 $ 236,937 $ 236,937