Earnings Per Share Schedule of Earnings per Share, Basic and Diluted (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted Average Number of Shares Outstanding, Basic	89,485	89,353	89,215
Weighted Average Number Diluted Shares Outstanding Adjustment	160	206	132
Weighted Average Number of Shares Outstanding, Diluted	89,645	89,559	89,347