Balance Sheet Components (Tables)

12 Months Ended

Dec. 31, 2017

Balance Sheet Components

Schedule of allowance for doubtful accounts

	December 31,		December 31,		December 31,
	2017		2016		2015
	(in thousands)
Beginning balance	$	1,890	$	971	$	527
Provision for estimated bad debts		143		984		529
Write offs		(33)		(65)		(85)
Ending balance	$	2,000	$	1,890	$	971

Schedule of property and equipment

		December 31,		December 31,
	Useful Life	2017		2016
		(in thousands)
Machinery and equipment	3-5 years	$	31,825	$	27,303
Furniture and fixtures	3 years		1,216		1,087
Computer equipment	3 years		1,958		861
Capitalized software held for internal use	3 years		4,465		2,172
Leasehold improvements	Life of lease		10,691		10,444
Construction-in-process			6,497		9,759
			56,652		51,626
Less: Accumulated depreciation and amortization			(26,985)		(19,337)
Total Property and Equipment, net		$	29,667	$	32,289

Schedule of accrued compensation

	December 31,		December 31,
	2017		2016
	(in thousands)
Accrued paid time off	$	1,806	$	1,892
Accrued commissions		3,558		3,868
Accrued bonuses		2,063		2,387
Other accrued compensation		2,172		2,920
Total accrued compensation	$	9,599	$	11,067

Schedule of other accrued liabilities

	December 31,		December 31,
	2017		2016
	(in thousands)
Settlement accrued for reimbursement related claims	$	10,062	$	—
Reserves for refunds to insurance carriers		6,794		7,535
Accrued charges for outsourced testing		6,566		3,261
Testing and laboratory materials from suppliers		1,367		543
Marketing and corporate affairs		1,456		202
Legal, audit and consulting fees		206		180
Accrued shipping charges		198		467
Sales tax payable		504		459
Accrued specimen service fees		683		469
Accrued rent		856		195
Clinical trials and studies		483		388
Leasehold improvement projects in progress		—		1,659
Other accrued expenses		4,032		4,521
Total other accrued liabilities	$	33,207	$	19,879