Revenue - Schedule of Changes in Deferred Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Deferred Revenue Disclosure [Abstract]
Balance, beginning of the period	$ 8,080	$ 7,206
Deferred revenue assumed in Merger	5,931
Deferral of revenue	28,651	19,326
Recognition of deferred revenue	(27,569)	(18,452)
Balance, ending of the period	$ 15,093	$ 8,080