Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2021

Revenue Recognition

Schedule of disaggregation of revenues by payer types

	Year Ended December 31,
	2021		2020		2019
	(in thousands)
Insurance carriers	$	492,563	$	300,220	$	210,919
Laboratory partners		100,019		58,196		59,876
Patients		32,904		32,589		31,533
Total revenues	$	625,486	$	391,005	$	302,328

Schedule of total revenue by geographic area

	Year ended December 31,
	2021		2020		2019
	(in thousands)
United States	$	590,872	$	365,660	$	260,846
Americas, excluding U.S.		4,047		3,469		3,218
Europe, Middle East, India, Africa		20,429		14,332		15,434
Asia Pacific and Other		10,138		7,544		22,830
Total	$	625,486	$	391,005	$	302,328

Schedule of beginning and ending balances of accounts receivable and deferred revenues

Balance at	Balance at
December 31,	December 31,
2021	2020

	(in thousands)
Assets:
Accounts receivable	$	122,074	$	78,565
Liabilities:
Deferred revenue, current portion	$	7,404	$	50,125
Deferred revenue, long-term portion		21,318		22,805
Total deferred revenues	$	28,722	$	72,930

Schedule of changes in the balance of deferred revenues

	Deferred
	Revenues
	(in thousands)
Balance at December 31, 2020	$	72,930
Increase in deferred revenues		7,915
Reclasses from deferred revenues to other to short-term liabilities		(10,080)
Revenue recognized during the period that was included in deferred revenues at the beginning of the period		(37,784)
Revenue recognized from performance obligations satisfied within the same period		(4,259)
Balance at December 31, 2021	$	28,722

Schedule of insurance carrier reserve balance

	December 31,		December 31,
	2021		2020
	(in thousands)
Beginning balance	$	17,366	$	9,410
Additional reserves		16,340		19,427
Refunds to carriers		(10,784)		(6,066)
Reserves released to revenue		(5,712)		(5,405)
Ending balance	$	17,210	$	17,366