Balance Sheet Components (Tables)

12 Months Ended

Dec. 31, 2020

Balance Sheet Components

Schedule of allowance for doubtful accounts

	December 31,		December 31,		December 31,
	2020		2019		2018
	(in thousands)
Beginning balance	$	2,919	$	1,788	$	2,000
Cumulative-effect adjustment upon adoption of ASU 2016-13		404		—		—
Provision for credit losses		1,354		1,141		(41)
Write offs		(457)		(10)		(171)
Ending balance	$	4,220	$	2,919	$	1,788

Schedule of property and equipment

		December 31,		December 31,
	Useful Life	2020		2019
		(in thousands)
Machinery and equipment	3-5 years	$	51,001	$	36,414
Furniture and fixtures	3 years		1,376		1,376
Computer equipment	3 years		2,428		1,828
Capitalized software held for internal use	3 years		7,417		5,917
Leasehold improvements	Life of lease		14,810		11,556
Construction-in-process			6,370		7,716
			83,402		64,807
Less: Accumulated depreciation and amortization			(50,054)		(41,524)
Total Property and Equipment, net		$	33,348	$	23,283

Schedule of accrued compensation

	December 31,		December 31,
	2020		2019
	(in thousands)
Accrued paid time off	$	2,260	$	1,850
Accrued commissions		12,686		5,767
Accrued bonuses		9,635		5,710
Other accrued compensation		5,790		2,761
Total accrued compensation	$	30,371	$	16,088

Schedule of other accrued liabilities

	December 31,		December 31,
	2020		2019
	(in thousands)
Reserves for refunds to insurance carriers	$	17,366	$	9,410
Accrued charges for third-party testing		5,141		8,408
Testing and laboratory materials from suppliers		2,720		4,301
Marketing and corporate affairs		3,325		2,957
Legal, audit and consulting fees		4,189		2,873
Accrued shipping charges		1,604		305
Sales tax payable		1,723		1,691
Accrued specimen service fees		2,355		2,269
Clinical trials and studies		2,353		1,092
Operating lease liabilities, current portion		7,300		5,739
Fixed asset purchases		1,691		1,482
Other accrued interest		1,078		—
Other accrued expenses		9,562		8,516
Total other accrued liabilities	$	60,407	$	49,043