Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Tables)

v3.21.1
Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 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 years ended December 31, 2020 and 2019 for both continuing and discontinuing employees is as follows:
  Options Outstanding Weighted-
Average
Remaining
Contractual
Term (in years)
Aggregate
Intrinsic
Value
  Number of
Shares
(in thousands)
Weighted-
Average
Exercise
Price
Outstanding January 1, 2019 100  $ 173.10  5.70 $
Granted 20  5.89 
Cancelled or expired (56) 182.37 
Outstanding December 31, 2019 64  113.63  7.48 $ 24 
Granted 20  5.53 
Cancelled or expired (28) 170.67 
Outstanding December 31, 2020 56  $ 45.92  6.31 $ — 
Exercisable, December 31, 2020 52  $ 47.39  6.20 $ — 
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: 
  Year Ended December 31,
  2020 2019
Volatility 110.43  % 93.86  %
Risk free interest rate 1.68  % 1.95  %
Dividend yield   — 
Term (years) 5.27 5.44
Weighted-average fair value of options granted during the period $ 4.45  $ 4.32 
Nonvested Restricted Stock Shares Activity
The following table summarizes the activities for the Company's non-vested restricted stock awards for the years ended December 31, 2020 and 2019 for both continuing and discontinuing employees:
Non-vested Restricted Stock Awards
Number of Shares (in thousands) Weighted-Average Grant Date Fair Value
Non-vested at January 1, 2019 $ 102.82 
Vested (1) 102.82 
Non-vested at December 31, 2020 and 2019 —  $ — 
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 Consolidated Statements of Operations and Other Comprehensive Loss during the periods presented:
  Year Ended December 31,
  2020 2019
Cost of revenues $ 15  $ 16 
General and administrative 164  247 
Total stock-based compensation related to continuing operations $ 179  $ 263