XML 43 R32.htm IDEA: XBRL DOCUMENT v3.20.2
Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of Valuation Assumptions
The fair value of each option award is estimated on the date of grant using the Black-Scholes option-pricing formula that uses assumptions noted in the following table. Expected volatilities and risk-free interest rates are based upon the expected life of the grant.
Six Months Ended June 30,
Assumptions20202019
Expected dividends— — 
Risk-free rate0.33%-1.60%1.68% - 2.47%
Expected volatility78.56% - 83.07%64.3% - 74.5%
Expected term (in years)3.2 - 3.3 years3.2 - 3.3 years
Schedule of Stock Option Activity A summary of option activity under the 1999 Director Stock Option Plan, 2009 Equity Incentive Plan, and the 2016 Equity Incentive Plan as of June 30, 2020 and changes during the period are presented below:
Number of
Options
Weighted Average
Exercise Price
Outstanding as of January 1, 2020516,820 $33.40 
Issued306,287 4.10 
Exercised— — 
Forfeited(18,260)15.60 
Expired(203,534)30.28 
Outstanding as of June 30, 2020
601,313 $20.07 
Exercisable as of June 30, 2020
214,952 $44.23 
Schedule of Stock Options Outstanding and Exercisable
The following tables summarize information regarding options outstanding and exercisable at June 30, 2020:
 
Outstanding:
Stock
Options		Weighted
Average		Weighted
Average
Remaining
Range of Exercise PricesOutstandingExercise PriceContractual Life
$0.00 - $7.80319,669 $4.22 9.60
$7.81 - $15.071,357 10.32 6.61
$15.1 - $55.0122,294 24.03 7.45
$55.1 - $106.787,993 80.07 5.55
Total601,313 $20.07 8.22

Exercisable: 
Range of Exercise PricesStock Options ExercisableWeighted Average Exercise Price
$0.00 - $7.80455 $6.28 
$7.81 - $15.055,991 10.68 
$15.1 - $55.071,343 26.92 
$55.1 - $106.787,163 80.16 
Total214,952 $4.06 
Schedule of Nonvested Restricted Stock Units Activity The following table summarizes the number of unvested RSUs and their weighted average exercise price for the six months ended June 30, 2020.
Number of RSUsWeighted Average Grant Date Fair Value
Non-vested balance at January 1, 20206,268 $40.69 
Changes during the period:
Shares granted— — 
Shares vested(4,906)43.58 
Shares forfeited— — 
Non-vested balance at June 30, 2020
1,362 $30.25