Annual report pursuant to Section 13 and 15(d)

Share-Based Compensation and Other Benefit Plans (Tables)

v3.20.4
Share-Based Compensation and Other Benefit Plans (Tables)
12 Months Ended
Dec. 31, 2020
Restricted Stock Units (RSUs)  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Activity of Awarded Restricted Stock Units
The following table summarizes activity for our most recent fiscal year with respect to awarded RSUs:
Restricted Stock
Units
Weighted-Average
Grant Date
Fair Value
Balance at beginning of year 136,876  $ 49.76 
Granted 281,382  $ 4.49 
Vested (63,916) $ 43.30 
Forfeited (35,062) $ 27.83 
Balance at end of year 319,280  $ 13.56 
Performance Restricted Stock Units [Domain]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Payment Award, Equity Instruments Other than Options, Valuation Assumptions
The ranges for the assumptions used in the Monte Carlo model for the PRSUs granted during 2020, 2019 and 2017 are presented as follows:
2020 2019
Expected volatility
101.32% to 117.71%
49.9  %
Dividend yield 0.0% 0.0%
Risk-free interest rate
0.18% to 0.51%
1.66  %
Activity of Awarded Performance-based RSUs
The following table summarizes activity for our most recent fiscal year with respect to PRSUs:
Performance Restricted Stock
Units
Weighted-Average Grant Date
Fair Value
Balance at beginning of year 79,914  $ 52.73 
Granted 145,399  $ 7.79 
Vested (31,146) $ 58.35 
Forfeited (20,635) $ 55.99 
Balance at end of year 173,532  $ 13.68 
As of December 31, 2020, we had $1.5 million of unrecognized compensation cost attributable to PRSUs. We expect that cost to be recognized over a weighted-average period of 1.3 years.