Stock-based Compensation (Tables)
12 Months Ended
Dec. 31, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of Weighted Average Assumptions Used to Estimate the Fair Value of Options Granted
The following table presents the weighted-average assumptions used to estimate the fair value of options granted (excluding replacement options in conjunction with modifications described below) during the periods presented:
Years Ended December 31,
20202019
Expected dividend yield— %— %
Expected stock price volatility63.8 %66.7 %
Risk-free interest rate1.8 %2.0 %
Expected life of options (in years)5.705.27
Schedule of Total Stock Based Compensation Expense
Total stock-based compensation expense included in the accompanying consolidated statements of operations for the years ended December 31, 2020 and 2019, is as follows (in thousands):
Years Ended December 31,
20202019
Technology and development$218 $338 
Sales and marketing407 513 
General and administrative831 765 
Total stock-based compensation expense$1,456 $1,616 
Summary of Stock Option Activity
Stock Option Activity —A summary of stock option activity for the year ended December 31, 2020 is as follows:
Number of
Shares
Weighted
Average
Exercise
Price
Aggregate
Intrinsic
Value (in
thousands)
Weighted
Average
Remaining
Contractual
Term (years)
Outstanding at January 1, 20207,296,746 $2.48 
Granted89,100 1.49 
Exercised— — 
Forfeited(161,651)2.28 
Expired(1,261,889)2.73 
Outstanding—December 31, 20205,962,306 $2.42 $4.72
Expected to vest—December 31, 20205,954,759 $2.42 $4.71
Vested and exercisable—December 31, 20205,396,910 $2.47 $— 4.39
Summary of RSU Activity
RSU Activity —A summary of RSU activity for the year ended December 31, 2020 is as follows:
Number of SharesWeighted Average
Fair Value
Unvested—January 1, 2020
677,354 $1.54 
Granted1,250,595 1.18 
Vested(503,048)1.38 
Forfeited(38,168)1.53 
Unvested—December 31, 2020
1,386,733 $1.27 
Share-based Payment Arrangement, Performance Shares, Activity
PSU Activity  — A summary of PSU activity for the year ended December 31, 2020 is as follows:
Number of SharesWeighted Average
Fair Value
Unvested—January 1, 2020297,789 $1.36 
Granted336,100 1.21 
Vested— — 
Forfeited(74,442)1.36 
Unvested—December 31, 2020559,447 $1.27