Revenue Recognition - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Disaggregation Of Revenue [Line Items]
Impairment losses recognized on contract assets	$ 0	$ 0	$ 0
Revenue recognized that was previously deferred	46,800,000	37,500,000
Contract asset, reclassified to receivable	1,500,000	$ 1,400,000
Remaining performance obligation	215,900,000
Deferred Contract Costs Expected To Be Amortized Within Next 12 Months
Disaggregation Of Revenue [Line Items]
Deferred contract or customer acquisition costs	$ 11,000,000.0		$ 10,900,000