Revenue Recognition - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Deferred sales commissions current	$ 12,700,000		$ 14,500,000
Deferred sales commissions noncurrent	17,400,000		15,900,000
Amortization expense for the deferred costs	3,700,000	$ 2,900,000
Impairment loss related to costs capitalized	0		$ 0
Subscription Services, License and other
Disaggregation Of Revenue [Line Items]
Revenue recognized	59,700,000	46,400,000
Professional Services
Disaggregation Of Revenue [Line Items]
Revenue recognized	4,500,000	$ 3,500,000
Revenue remaining performance obligation	11,500,000
Subscription Services And License
Disaggregation Of Revenue [Line Items]
Revenue remaining performance obligation	$ 366,900,000