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Share Based Compensation (Tables)	6 Months Ended
Share Based Compensation (Tables)	Jun. 30, 2021
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of share-based compensation expense in its Consolidated Statements of Income [Table Text Block]	Three Months Ended Six Months Ended June 30, June 30, 2021 2020 2021 2020 Stock options $ 332 $ 353 $ 640 $ 785 Non-vested stock awards and restricted stock units 1,290 1,259 2,686 2,523 Non-elective and elective 401(k) matching contribution in stock — 1,162 1,553 1,162 Director stock ownership plan 216 54 419 94 Performance stock units 517 280 836 280 Annual incentive plan — (117) — 2,829 Total share-based compensation expense $ 2,355 $ 2,991 $ 6,134 $ 7,673
Schedule of Black-Scholes option pricing model and the assumptions [Table Text Block]	Number of options granted 25,250 Dividend yield 0.85 % Expected volatility 37.33 % Risk-free interest rate 0.60 % Expected term (years) 4.0