Statements of Operations and Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Condensed Consolidated Statements of Operations and Comprehensive Loss
Revenue	$ 81,024	$ 47,197
Revenue, type	us-gaap:ServiceMember	us-gaap:ServiceMember
Cost of services	$ 64,422	$ 37,233
Cost of services, type	us-gaap:ServiceMember	us-gaap:ServiceMember
Gross profit	$ 16,602	$ 9,964
Operating expenses:
Sales and marketing	3,267	2,346
General and administrative	9,476	4,508
Total operating expenses	12,743	6,854
Income from operations	3,859	3,110
Other income (expense):
Other income	164
Interest income (expense), net	150	(38)
Convertible preferred stock warrant valuation adjustment		(551)
Total other income (expense), net	314	(589)
Income before income tax	4,173	2,521
Provision for income taxes	116	0
Net income	4,057	2,521
Comprehensive income	4,057	2,521
Net income attributable to common stockholders	$ 4,057	$ 31
Net income per share attributable to common stockholders:
Basic (in dollars per share)	$ 0.05	$ 0.01
Diluted (in dollars per share)	$ 0.04	$ 0.01
Weighted-average shares used in computing net earnings per share:
Basic (in shares)	84,537,538	5,156,755
Diluted (in shares)	99,665,158	15,120,928