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Earnings per Share Earnings per Share (Tables)
6 Months Ended
Jun. 30, 2022
Earnings Per Share [Abstract]  
Schedule of Weighted Average Number of Shares [Table Text Block] The following table summarizes the dilutive effect of RSUs and options to purchase common stock for the six months ended June 30, 2022 and 2021:
Three months ended
June 30,
Six months ended
June 30,
2022202120222021
Weighted average common shares—basic42,297,525 43,110,191 42,548,366 43,147,599 
Dilutive effect of restricted stock units183,674 198,165 247,080 299,425 
Dilutive effect of stock options— — — 24,592 
Weighted average common shares—diluted42,481,199 43,308,356 42,795,446 43,471,616