Balance Sheet Components

9 Months Ended

Sep. 30, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

3.	Balance Sheet Components

Property and Equipment, Net

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

	September 30, 2019			December 31, 2018
Prototype	$	12,512		$	12,425
Machinery and equipment		15,588			12,654
Leasehold improvements		5,055			4,600
Furniture and fixtures		998			636
Software		1,389			1,250
Construction in progress		8,806			148
Property and equipment, gross		44,348			31,713
Less: accumulated depreciation and amortization		(20,911	)		(17,755	)
Property and equipment, net	$	23,437		$	13,958

Depreciation and amortization expense related to property and equipment were $1.2 million and $0.9 million during the three months ended September 30, 2019 and 2018, and $3.2 million and $2.5 million during the nine months ended September 30, 2019 and 2018, respectively.

Intangible Assets

In September 2019, the Company entered into a licensing agreement (the “License”) with VU University Medical Center, or VUmc, whereby VUmc granted the Company a worldwide exclusive license to developed strategies for fast stereotactic MR-guided adaptive radiation therapy for $57 thousand. The License is amortized on a straight-line basis over ten years. During the three and nine months ended September 30, 2019 and 2018, there was no intangible assets amortization expense.

Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):

	September 30, 2019		December 31, 2018
Accrued payroll and related benefits	$	7,094	$	5,047
Accrued accounts payable		2,683		3,626
Payroll withholding tax, sales and other tax payable		3,378		782
Accrued legal, accounting and professional fees		375		360
Product upgrade reserve		3,794		—
Other		1,511		168
Total accrued liabilities	$	18,835	$	9,983

Deferred Revenue

Deferred revenue consisted of the following (in thousands):

	September 30, 2019			December 31, 2018
Deferred revenue:
Product	$	3,654		$	9,623
Service		7,991			6,981
Distribution rights		2,515			2,871
Total deferred revenue		14,160			19,475
Less: current portion of deferred revenue		(9,644	)		(13,731	)
Noncurrent portion of deferred revenue	$	4,516		$	5,744

Other Long-Term Liabilities

	September 30, 2019		December 31, 2018
Accrued interest, noncurrent portion	$	347	$	—
Deferred rent, noncurrent portion		—		628
Other		215		192
Total other-long term liabilities	$	562	$	820