Balance Sheet Details (Tables)

12 Months Ended

Dec. 31, 2020

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Summary of Short-Term Investments

The following is a summary of our short-term investments (in thousands):

	December 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
U.S. treasury bills and government agency obligations	$	20,110	$	166	$	—	$	20,276
U.S. corporate debt		11,505		42		—		11,547
Foreign corporate debt		15,508		49		—		15,557
U.S. commercial paper		13,997		—		—		13,997
Foreign commercial paper		41,976		—		—		41,976
Total	$	103,096	$	257	$	—	$	103,353

	December 31, 2019
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
U.S. treasury bills and government agency obligations	$	140,567	$	59	$	—	$	140,626
U.S. corporate debt securities		80,159		11		—		80,170
Foreign corporate debt securities		23,188		15		—		23,203
U.S. commercial paper		32,801		—		—		32,801
Foreign commercial paper		42,274		—		—		42,274
Total	$	318,989	$	85	$	—	$	319,074

Schedule of Inventory

Inventory consists of the following (in thousands):

	December 31,
	2020		2019
Raw materials	$	18,994	$	6,635
Work in process		6,847		12,571
Finished goods		16,064		5,762
Total inventory	$	41,905	$	24,968

Schedule of Property and Equipment, Net

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

	December 31,
	2020			2019
Scientific equipment	$	29,135		$	24,603
Leasehold improvements		878			206
Computer equipment and software		1,461			1,314
Furniture, fixtures and office equipment		2,135			1,520
Property and equipment, gross		33,609			27,643
Less: accumulated depreciation and amortization		(10,872	)		(8,025	)
Property and equipment, net	$	22,737		$	19,618

Schedule of Accrued Liabilities

Accrued payroll and employee liabilities consist of the following (in thousands):

	December 31,
	2020		2019
Accrued employee salaries and benefits	$	1,691	$	3,047
Accrued bonuses		8,479		9,545
Accrued vacation		3,427		2,656
Total accrued payroll and employee liabilities	$	13,597	$	15,248

Other accrued liabilities consist of the following (in thousands):

	December 31,
	2020		2019
Accrued product sales allowances	$	24,571	$	27,939
Accrued consulting and professional fees		3,450		7,742
Accrued accounts payable		104		310
Other accrued liabilities		244		544
Total other accrued liabilities	$	28,369	$	36,535