Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Roll-Forward of Activity in Allowance for Credit Losses

A roll-forward of the activity in the Company’s allowance for credit losses is as follows:

	December 31,
	2022			2021			2020
	(in thousands)
Allowance for credit losses at beginning of year	$	11,217		$	1,898		$	751
Impact of ASU 2016-13 adoption		—			887			—
Current period provision		32,596			8,931			1,170
Write-downs		(2,608	)		(499	)		(23	)
Allowance for credit losses at end of year	$	41,205		$	11,217		$	1,898

Accounting Standards Update 2014-09

Summary of Revenue from Contracts with Customers by Payor Type

The following table summarizes revenue from contracts with customers by payor type for the years ended December 31, 2022, 2021 and 2020.

	Year Ended December 31,
	2022		2021		2020
	(in thousands)
Testing Services by payor
Insurance	$	377,873	$	555,762	$	257,587
Institutional		239,961		435,688		163,083
Patient		1,134		1,134		1,042
Total Revenue	$	618,968	$	992,584	$	421,712