Deferred Contract Costs - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue from Contract with Customer [Abstract]
Capitalized contract cost, amortization	$ 1,200,000	$ 800,000	$ 2,300,000	$ 1,500,000
Impairment losses	$ 0	$ 0	$ 0	$ 0