Balance Sheet Components (Tables)

12 Months Ended

Dec. 31, 2019

Balance Sheet Related Disclosures [Abstract]

Schedule of property and equipment

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

	December 31,
	2019			2018
Leasehold improvements	$	5,926		$	5,825
Laboratory equipment	9,655			8,895
Computer equipment	1,709			1,615
Software, including software developed for internal use	3,226			2,450
Furniture and fixtures	1,482			1,435
Construction-in-process	1,015			726
Total property and equipment, at cost	23,013			20,946
Accumulated depreciation and amortization	(14,080		)	(12,006		)
Total property and equipment, net	$	8,933		$	8,940

Schedule of finite-lived intangible assets

Finite-live intangible assets consisted of the following (in thousands of dollars):

	December 31, 2019							December 31, 2018							Weighted Average Amortization Period (Years)
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Percepta product technology	$	16,000	$	(5,067	)	$	10,933	$	16,000	$	(4,000	)	$	12,000	15
Prosigna product technology	4,120		(17		)	4,103		—		—			—		15
Prosigna customer relationships	2,430		(42		)	2,388		—		—			—		5
nCounter FLEX Dx license	46,880		(263		)	46,617		—		—			—		15
LymphMark product technology	990		(12		)	978		—		—			—		7
Total	$	70,420	$	(5,401	)	$	65,019	$	16,000	$	(4,000	)	$	12,000	14.5

Schedule of future amortization

The estimated future aggregate amortization expense as of December 31, 2019 is as follows (in thousands of dollars):

Year Ending December 31,	Amounts
2020	$	5,095
2021	5,094
2022	5,094
2023	5,094
2024	5,054
Thereafter	39,588
Total	$	65,019

Schedule of accrued liabilities

Accrued liabilities consisted of the following (in thousands of dollars):

	December 31,
	2019		2018
Accrued compensation expense	$	10,100	$	6,412
Accrued other	3,634		2,774
Total accrued liabilities	$	13,734	$	9,186