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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2020
Share-based Payment Arrangement [Abstract]  
Summary of Option Activity
A summary of all option activity as of December 31, 2019, and changes during the three months ended March 31, 2020 is presented below.

Number
 of
Stock Options
Weighted Average
Exercise
 Price
Weighted
Average
Remaining
Contractual Life (years)
Aggregate
Intrinsic
Value
(in thousands)
Outstanding, December 31, 2019208,334  $23.67  3.66$—  
Granted
—  —  
       Expired
40,000  19.11  
Outstanding, March 31, 2020168,334  $24.75  4.26$—  
Exercisable, March 31, 2020168,334  $24.75  4.26$—  
Summary of Stock Options Outstanding
The following table summarizes information about our stock options outstanding at March 31, 2020:

 
Range of Exercise Prices
Options Outstanding
Options Exercisable
Shares
Weighted
Average
Remaining
Contractual
Life (years)
Weighted
Average
Exercise
Price
Shares
Weighted
Average
Exercise
Price
$0.01-15.70
8,500  1.82$14.89  8,500  $14.89  
$15.71-17.81
16,000  0.8217.81  16,000  17.81  
$17.82-20.48
20,500  2.9718.75  20,500  18.75  
$20.49-33.36
123,334  5.0927.33  123,334  27.33  
168,334  4.26$24.75  168,334  $24.75  
Status of Unvested Stock Options
The summary of the status of our unvested stock options as of December 31, 2019 and changes during the three months ended March 31, 2020 is presented below.
 
 
 
Unvested stock options:
Shares
Weighted Average
Grant Date Fair Value Per Share
Unvested at December 31, 201910,433  $11.93  
Granted—  —  
Vested(10,433) 11.93  
Canceled/Forfeited—  —  
Unvested at March 31, 2020—  $—