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Warrants, Restricted Stock, Restricted Stock Units, Options and Option Matching Rights (Tables)
 12 Months Ended
Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Fair Value Assumptions
No options were granted in 2017, 2016 and 2015.
Schedule of Stock Option Activity
The following table reflects stock option activity in 2017, 2016 and 2015:
 

Number of
shares
 
Range of exercise
prices per share
 
Weighted
average exercise
price per share
 
Weighted
average remaining
contractual life (years)
Options outstanding at December 31, 2014
156,200

 
$7.95 - $131.10
 
$
33.25

 
1.47
Options exercised in 2015
(81,600
)
 
$13.95-$27.15

 
 
 
 
Forfeited in 2015
(18,000
)
 
$13.95 -$127.95

 
 
 
 
Options outstanding at December 31, 2015
56,600

 
$7.95 - $131.10

 
$
48.50

 
2.61
Options exercised in 2016
(18,000
)
 
$7.95-$9.90

 
 
 
 
Forfeited in 2016
(5,000
)
 
$14.85 -$82.95

 
 
 
 
Options outstanding at December 31, 2016
33,600

 
$7.95 - $131.10

 
$
68.92

 
1.11
Options exercised in 2017
(2,000
)
 
7.95

 
 
 
 
Forfeited in 2017
(18,300
)
 
$14.85 -$131.10

 
 
 
 
Options outstanding at December 31, 2017
13,300

 
$15.00 - $40.05

 
$
26.03

 
0.74
Schedule of Restricted Stock and Restricted Stock Units Activity
The following table reflects restricted stock and restricted stock unit activity in 2017, 2016 and 2015:

 
 
Number of Restricted Shares
 
Number of Restricted Stock Units
Outstanding at December 31, 2014
 
37,000

 
—

Grants in 2015
 
120,000

 
—

Vested in 2015
 
(20,000
)
 
—

Outstanding at December 31, 2015
 
137,000

 
—

Grants in 2016
 
105,000

 
—

Vested in 2016
 
(22,000
)
 
—

Forfeited in 2016
 
(4,000
)
 
—

Outstanding at December 31, 2016
 
216,000

 
—

Grants in 2017
 
1,000

 
74,500

Vested in 2017
 
(55,000
)
 
—

Forfeited in 2017
 
(22,000
)
 
(1,600
)
Outstanding at December 31, 2017
 
140,000

 
72,900