Earnings per Share (Reconciliation of Number of Shares Used in Calculating Basic and Diluted 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 [Line Items]
Basic weighted-average shares outstanding	69,580	67,316	69,502	67,265
Diluted weighted-average shares outstanding	69,791	67,732	69,731	67,664
Performance shares [Member]
Earnings per Share [Line Items]
Incremental shares	152	355	154	343
Restricted stock units [Member]
Earnings per Share [Line Items]
Incremental shares	59	61	75	56