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Restricted Stock Units (RSU) (Tables)
9 Months Ended
Sep. 30, 2021
Restricted Stock Units [Abstract]  
Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]

Time-Based RSU's

Targeted Performance-Based RSU's

Closing
Stock
Price

Vesting
Date

Balance at December 31, 2019

8,379

9,781

Issued

4,163

-

$

16.64

12/8/2022

Issued

-

6,461

$

16.64

12/31/2022

Exercised

(2,062)

(2,082)

$

19.00

12/31/2019

Exercised

(1,588)

-

$

19.44

12/11/2020

Forfeited

(1,254)

(4,549)

Balance at December 31, 2020

7,638

9,611

Issued

3,364

5,247

$

21.90

12/31/2023

Exercised

-

(1,588)

$

23.67

12/31/2020

Balance at September 30, 2021

11,002

13,270