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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2021
Summary of Significant Accounting Policies  
Schedule of assets recorded at fair value

The Company measures the fair value of financial assets using the highest level of inputs that are reasonably available as of the measurement date. The assets recorded at fair value are classified within the hierarchy as follows for the periods reported (in thousands):

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

$

December 31, 2020

    

Total

    

    

Fair Value

Level 1

Level 2

Level 3

Money Market Funds in Cash and Cash Equivalents

$

158,937

$

158,937

$

$

Corporate Securities

119,833

119,833

Government Securities

315,353

315,353

$

594,123

$

158,937

$

435,186

$

Schedule of useful lives by asset category

    

    

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

December 31, 

 

2021

2020

 

Patents, definite life

    

$

13,231

    

$

12,038

Patents, pending issuance

8,821

 

8,432

Licenses and other amortizable intangible assets

2,474

 

2,560

Nonamortizable intangible assets (trademarks)

399

 

399

Total gross carrying amount

24,925

 

23,429

Accumulated amortization—patents

(6,800)

 

(5,791)

Accumulated amortization—licenses and other

(1,632)

 

(1,661)

Total intangible assets, net

$

16,493

$

15,977

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, 

 

2021

2020

 

Patents, definite life

    

$

13,231

    

$

12,038

Patents, pending issuance

8,821

 

8,432

Licenses and other amortizable intangible assets

2,474

 

2,560

Nonamortizable intangible assets (trademarks)

399

 

399

Total gross carrying amount

24,925

 

23,429

Accumulated amortization—patents

(6,800)

 

(5,791)

Accumulated amortization—licenses and other

(1,632)

 

(1,661)

Total intangible assets, net

$

16,493

$

15,977

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

    

Year ended

 

December 31, 

 

(in thousands)

 

2022

$

1,073

2023

957

2024

770

2025

680

2026

586

Thereafter

3,207

Total

$

7,273

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

Year Ended December 31, 

 

2021

2020

2019

 

(in thousands, except share and per share data)

 

Basic

    

    

    

    

    

    

Numerator:

Net income (loss) attributable to common stockholders for basic net income (loss) per share

$

82,631

$

(69,333)

$

26,875

Denominator:

Weighted-average common shares outstanding

58,379,641

 

57,212,737

 

56,531,439

Basic net income (loss) per common share

$

1.42

$

(1.21)

$

0.48

Diluted

Numerator:

Net income (loss) attributable to common stockholders for diluted net income (loss) per share

$

82,631

$

(69,333)

$

26,875

Denominator:

Weighted average number of common shares outstanding used in computing basic net income (loss) per common share

58,379,641

 

57,212,737

 

56,531,439

Dilutive effect of employee stock options, RSUs, and ESPP

2,115,814

 

 

1,936,441

Weighted-average number of common shares outstanding used in computing diluted net income (loss) per common share

60,495,455

 

57,212,737

 

58,467,880

Diluted net income (loss) per common share

$

1.37

$

(1.21)

$

0.46