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Stock-Based Compensation Plans (Tables)
12 Months Ended
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]  
Schedule of share-based compensation expense Stock compensation expense consisted of the following for the years ended December 31:
201920182017
Share-based compensation - employees$1,481,016 $1,244,606 $1,032,094 
Share-based compensation - nonemployees4,882 120,092 82,969 
Share-based compensation - foundation contribution— $— 372,500 
Total share-based compensation$1,485,898 $1,364,698 $1,487,563 
Schedule of stock options activity
Stock option activity for 2019 and 2018 was as follows:
Number of
shares
Weighted-average exercise price per share
Weighted-
average
remaining
contractual
term (years)
Aggregate
intrinsic
value
Outstanding, December 31, 20175,800 $13.00 1.9$— 
Options granted— — 
Options exercised— — 
Options forfeited or expired— — 
Outstanding, December 31, 20185,800 13.00 0.9— 
Options granted— — 
Options exercised— — 
Options forfeited or expired(5,800)13.00 
Outstanding, December 31, 2019— — 0— 
Exercisable at December 31, 2019— $— 0$— 
Schedule of stock options activity, additional disclosures Information related to the stock option plans during 2019, 2018 and 2017 was as follows:
201920182017
Intrinsic value of options exercised$— $— $— 
Weighted-average fair value of
options exercised
$— $— $— 
Schedule of restricted stock activity
Restricted stock activity was as follows:
Number
of shares
Weighted-
average
grant-date
fair value
Nonvested, December 31, 2017767,845 $5.61 
Shares granted261,680 6.66 
Shares vested(170,759)4.79 
Shares forfeited(25,025)6.19 
Nonvested, December 31, 2018833,741 6.09 
Shares granted229,669 5.95 
Shares vested(225,536)6.71 
Shares forfeited(22,925)6.20 
Nonvested, December 31, 2019814,949 $5.88