Earnings Per Share Components of Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share [Abstract]
Weighted Average Number of Shares Outstanding, Basic	89,225	89,554	89,310	89,555
Dilutive effect of potential common shares	146	118	139	132
Weighted Average Number of Shares Outstanding, Diluted	89,371	89,672	89,449	89,687