Revenue, Deferred Revenue, and Deferred Costs and Other Revenue, Deferred Revenue, and Deferred Costs and Other - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Accrued rebates	$ 1,730	$ 1,152	$ 533	$ 609