Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Revenue disaggregated by type of customer

The following table summarizes the Company’s disaggregated revenue (in thousands):

	Year Ended December 31,
	2021		2020		2019
Diagnostic test revenue:
Patients with third-party insurance	$	169,576	$	138,153	$	169,538
Institutional customers	31,717		35,200		20,888
Self-pay patients	3,807		1,998		1,241
Total diagnostic test revenue	205,100		175,351		191,667
Other revenue	7,095		3,971		4,507
Total	$	212,195	$	179,322	$	196,174

Contract assets and contract liabilities

A reconciliation of the beginning and ending balances of contract assets and contract liabilities is shown in the table below (in thousands):

	Contract Assets		Contract Liabilities
December 31, 2020	$	2,028	$	3,811
Contract asset additions	1,163		—
Customer prepayments	—		2,223
Revenue recognized	105		(2,265)
December 31, 2021	$	3,296	$	3,769