Benefit Plans (Tables)
 12 Months Ended
Oct. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Schedule of Share-Based Compensation Reflected in Consolidated Statement of Operations and Comprehensive Loss

Share-based compensation was reflected in the Consolidated Statements of Operations and Comprehensive Loss as follows (in thousands):

 

 

 

2020

 

 

2019

 

 

2018

 

Cost of revenues

 

$

344

 

 

$

593

 

 

$

543

 

General and administrative expense

 

 

1,424

 

 

 

1,865

 

 

 

2,256

 

Research and development expense

 

 

54

 

 

 

272

 

 

 

355

 

 

 

$

1,822

 

 

$

2,730

 

 

$

3,154

 
Schedule of Fair Value of Stock Options Estimated on Grant Date The fair value of stock options is estimated on the grant date using the Black-Scholes option valuation model as follows:

 

 

 

2018

 

Expected life (in years)

 

 

7.0

 

Risk free interest rate

 

 

2.8

%

Volatility

 

 

72.7

%

Dividend yield

 

 

—

%

 
Summary of Stock Option Activity

The following table summarizes our stock option activity for the year ended October 31, 2020:

 

 

 

 

 

 

 

Weighted-

Average

Option

 

Options

 

Shares

 

 

Price

 

Outstanding as of October 31, 2019

 

 

24,927

 

 

$

104.73

 

Cancelled and forfeited

 

 

(1,036

)

 

$

416.16

 

Outstanding as of October 31, 2020

 

 

23,891

 

 

$

91.23

 
Summary of Information about Stock Options Outstanding and Exercisable

The following table summarizes information about stock options outstanding and exercisable as of October 31, 2020:

 

 

 

Options Outstanding

 

 

Options Exercisable

 

 

 

 

 

 

 

Weighted

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Average

 

 

Weighted

 

 

 

 

 

 

Weighted

 

 

 

 

 

 

 

Remaining

 

 

Average

 

 

 

 

 

 

Average

 

Range of

 

Number

 

 

Contractual

 

 

Exercise

 

 

Number

 

 

Exercise

 

Exercise Prices

 

outstanding

 

 

Life

 

 

Price

 

 

exercisable

 

 

Price

 

$0.00 — $38.76

 

 

13,192

 

 

 

6.9

 

 

$

19.16

 

 

 

13,192

 

 

$

19.16

 

$38.77 — $416.16

 

 

10,699

 

 

 

3.1

 

 

$

180.09

 

 

 

10,699

 

 

$

180.09

 

 

 

 

23,891

 

 

 

5.2

 

 

$

91.23

 

 

 

23,891

 

 

$

91.23

 
Summary of RSA and RSU Activity

The following table summarizes our RSA and RSU activity for the year ended October 31, 2020:

 

 

 

 

 

 

 

Weighted-

Average

 

Restricted Stock Awards and Units

 

Shares

 

 

Fair Value

 

Outstanding as of October 31, 2019

 

 

191,115

 

 

 

16.11

 

Granted

 

 

1,978,108

 

 

 

2.84

 

Vested

 

 

(95,127

)

 

 

17.15

 

Forfeited

 

 

(6,956

)

 

 

17.79

 

Outstanding as of October 31, 2020

 

 

2,067,140

 

 

 

5.06