Quarterly report pursuant to Section 13 or 15(d)

Revenue - Additional Information (Details)

v3.21.1
Revenue - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Disaggregation Of Revenue [Abstract]      
Revenue from usage-based fees in total revenue 98.00% 98.00%  
Revenue from term-based fees in total revenue 2.00% 2.00%  
Deferred revenue $ 3.1   $ 3.7
Deferred revenue, revenue recognized $ 1.6