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Share-based Compensation (Tables)
3 Months Ended
Mar. 31, 2021
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, 2020

 

1,515,876

$

6.50

Granted

 

831,021

9.27

Vested

 

(445,187)

 

7.10

Forfeited

 

(35,624)

 

6.98

Unvested at March 31, 2021

 

1,866,086

$

7.61

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

Weighted

Number of

Average Grant

    

Units

    

Date Fair Value

Unvested at December 31, 2020

 

203,757

$

4.96

Granted

 

Vested

(45,804)

4.41

Forfeited/Canceled

Unvested at March 31, 2021

 

157,953

$

5.12

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

Number of

Weighted

    

Units

    

Average

Unvested at December 31, 2020

 

625,030

$

2.15

Vested

 

(153,323)

2.15

Unvested at March 31, 2021

 

471,707

$

2.15