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Share-based Compensation (Tables)
9 Months Ended
Sep. 30, 2020
Share-based Payment Arrangement [Abstract]  
Nonvested Restricted Stock Shares Activity [Table Text Block]

Weighted

Number of

Average Grant

    

Units

    

Date Fair Value

Unvested at December 31, 2019

 

908,088

$

8.73

Granted

 

1,014,912

5.03

Vested

 

(221,752)

 

8.96

Forfeited

 

(65,832)

 

7.05

Unvested at September 30, 2020

 

1,635,416

$

6.47

Share-based Payment Arrangement, Option, Activity [Table Text Block]

Weighted

Number of

Average Grant

    

Units

    

Date Fair Value

Unvested at December 31, 2019

 

359,259

$

4.95

Vested

(87,476)

5.05

Forfeited/Canceled

(42,515)

5.00

Unvested at September 30, 2020

 

229,268

$

4.90

Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]

Number of

Weighted

    

Units

    

Average

Unvested at December 31, 2019

 

842,888

$

2.14

Vested

(216,304)

2.12

Unvested at September 30, 2020

626,584

$

2.15