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Share-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2020
Share Based Compensation [Abstract]  
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]
Three Months Ended
Six Months Ended
June 30,
June 30,
2020
2019
2020
2019
Stock options
$
353
$
173
$
785
$
433
Non-vested restricted stock awards and restricted stock
 
units
1,259
440
2,523
1,138
Non-elective and elective 401(k) matching contribution in
 
stock
1,162
1,162
Employee stock purchase plan
24
47
Director stock ownership plan
54
23
94
54
Performance stock units
280
280
Annual incentive plan
(117)
2,829
Total share-based
 
compensation expense
$
2,991
$
660
$
7,673
$
1,672
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Number of options granted
49,115
Dividend yield
0.99
%
Expected volatility
31.57
%
Risk-free interest rate
0.36
%
Expected term (years)
4.0