Balance Sheet Components (Tables)

3 Months Ended

Mar. 31, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Components of Inventory and Printed Circuit Board Assemblies ("PCBAs")

Inventory and Printed Circuit Board Assemblies (“PCBAs”), which are recorded as other assets as they are used many times over a period longer than one year on average, consisted of the following (in thousands):

	March 31, 2019		December 31, 2018
Raw materials	$	968	$	1,028
Finished goods		4,661		3,565
Total	$	5,629	$	4,593

Classified as:
Inventory	$	2,504	$	2,062
Other assets		3,125		2,531
Total	$	5,629	$	4,593

Components of Property and Equipment, Net

Property and equipment, net consisted of the following (in thousands):

	March 31,			December 31,
	2019			2018
Laboratory and manufacturing equipment	$	3,120		$	2,750
Computer equipment and software		1,062			1,062
Furniture and fixtures		925			925
Leasehold improvements		726			726
Internal-use software		10,228			8,925
Total property and equipment, gross		16,061			14,388
Less: accumulated depreciation and amortization		(5,853	)		(5,230	)
Total property and equipment, net	$	10,208		$	9,158

Components of Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):

	March 31,		December 31,
	2019		2018
Accrued vacation	$	3,404	$	2,825
Accrued payroll and related expenses		8,443		18,188
Accrued ESPP contributions		1,530		352
Accrued professional services fees		867		1,243
Claims payable		3,420		2,374
Other		2,435		1,588
Total accrued liabilities	$	20,099	$	26,570