Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Tables)

v3.20.2
Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2020
Share-based Payment Arrangement [Abstract]  
Summary of employee and nonemployee stock option activity
A summary of employee and non-employee stock option activity for the nine months ended September 30, 2020 for both continuing and discontinuing employees is as follows:
  Options Outstanding Weighted-
Average
Remaining
Contractual
Term (in years)		 Aggregate
Intrinsic
Value
(in thousands)
  Number of
Shares
(in thousands)		 Weighted-
Average
Exercise
Price
Outstanding January 1, 2020 64  $ 113.63  7.48 $ 24 
Granted 20  5.53 
Cancelled or expired (13) 109.42 
Outstanding September 30, 2020 71  $ 83.90  6.76 $ — 
Exercisable September 30, 2020 59  $ 98.42  6.38 $ — 
Weighted-average assumptions used to estimate fair value of options granted
The following table presents the weighted-average assumptions used to estimate the fair value of options granted to continuing and discontinuing employees during the periods presented:
  Three Months Ended September 30, Nine Months Ended September 30,
  2019 2020 2019
Volatility 94.57  % 110.43  % 93.86  %
Risk free interest rate 1.84  % 1.68  % 1.95  %
Dividend yield 0.00  % 0.00  % 0.00  %
Term (years) 5.27 5.27 5.44
Weighted-average fair value of options granted during the period $ 3.23  $ 4.45  $ 4.32 
Summary of the effects of stock-based compensation related to stock option and restricted stock awards The following table presents the effects of stock-based compensation related to stock option and
restricted stock awards to employees and non-employees on the Company's continuing operations included in its Unaudited Condensed Consolidated Statements of Operations and Other Comprehensive Loss during the periods presented (in thousands):

  Three Months Ended September 30, Nine Months Ended September 30,
  2020 2019 2020 2019
Cost of revenues $ 3  $ 4  $ 10  $ 12 
General and administrative 36  36  142  214 
Total stock-based compensation related to continuing operations $ 39  $ 40  $ 152  $ 226