Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Accounting Policies [Abstract]

Schedule of assets recorded at fair value

The assets recorded at fair value are classified within the hierarchy as follows for the periods reported (in thousands):

	December 31, 2022
	Total Fair Value		Level 1		Level 2		Level 3
Money Market Funds in Cash and Cash Equivalents	$	40,967	$	40,967	$	—	$	—
Corporate Securities	200,626		—		200,626		—
Government Securities	329,889		—		329,889		—
	$	571,482	$	40,967	$	530,515	$	—

	December 31, 2021
	Total Fair Value		Level 1		Level 2		Level 3
Money Market Funds in Cash and Cash Equivalents	$	123,892	$	123,892	$	—	$	—
Corporate Securities	144,418		—		144,418		—
Government Securities	309,814		—		309,814		—
	$	578,124	$	123,892	$	454,232	$	—

Schedule of useful lives by asset category

Useful lives by asset category are as follows:

Computers, software and equipment	3 - 5 years
Furniture and fixtures	5 - 7 years
Leasehold improvements	5 - 7 years or remaining
	lease term, whichever is less

Schedule of finite-lived intangible assets

The carrying amount and accumulated amortization of patents, licenses, and other intangibles is as follows (in thousands):

	December 31,
	2022		2021
Patents, definite life	$	14,535	$	13,231
Patents, pending issuance	9,328		8,821
Licenses and other amortizable intangible assets	3,908		2,474
Nonamortizable intangible assets (trademarks)	399		399
Total gross carrying amount	28,170		24,925
Accumulated amortization—patents	(7,781)		(6,800)
Accumulated amortization—licenses and other	(1,889)		(1,632)
Total intangible assets, net	$	18,500	$	16,493

Schedule of indefinite-lived intangible assets

The carrying amount and accumulated amortization of patents, licenses, and other intangibles is as follows (in thousands):

	December 31,
	2022		2021
Patents, definite life	$	14,535	$	13,231
Patents, pending issuance	9,328		8,821
Licenses and other amortizable intangible assets	3,908		2,474
Nonamortizable intangible assets (trademarks)	399		399
Total gross carrying amount	28,170		24,925
Accumulated amortization—patents	(7,781)		(6,800)
Accumulated amortization—licenses and other	(1,889)		(1,632)
Total intangible assets, net	$	18,500	$	16,493

Future amortization expense for patents, licenses, and other intangible assets

Future amortization expense for patent, licenses, and other intangible assets recorded as of December 31, 2022, and for which amortization has commenced, is as follows:

	Year ended December 31,
	(in thousands)
2023	$	1,165
2024	1,123
2025	1,110
2026	1,097
2027	1,096
Thereafter	3,181
Total	$	8,772

Schedule of basic and diluted net income (loss) per common share

Basic and diluted net income (loss) per common share is computed as follows:

Basic net income (loss) per common share is computed by dividing the net income or loss by the weighted-average number of common shares outstanding during the period. Potentially dilutive securities were included in the diluted net income per common share calculation for 2021.

In 2022 and 2020, we excluded all options and awards from the calculations because we reported net losses in the period, and the inclusion of such shares would have had an antidilutive effect.

	Year Ended December 31,
	2022		2021		2020
	(in thousands, except share and per share data)
Basic
Numerator:
Net income (loss) attributable to common stockholders for basic net income (loss) per share	$	(55,181)	$	82,631	$	(69,333)
Denominator:
Weighted-average common shares outstanding	59,652,461		58,379,641		57,212,737
Basic net income (loss) per common share	$	(0.93)	$	1.42	$	(1.21)
Diluted
Numerator:
Net income (loss) attributable to common stockholders for diluted net income (loss) per share	$	(55,181)	$	82,631	$	(69,333)
Denominator:
Weighted average number of common shares outstanding used in computing basic net income (loss) per common share	59,652,461		58,379,641		57,212,737
Dilutive effect of employee stock options, RSUs, and ESPP	—		2,115,814		—
Weighted-average number of common shares outstanding used in computing diluted net income (loss) per common share	59,652,461		60,495,455		57,212,737
Diluted net income (loss) per common share	$	(0.93)	$	1.37	$	(1.21)