Background, Organization, and Summary of Significant Accounting Policies Background, Organization, and Summary of Significant Accounting Policies - Schedule of Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Average basic shares (in shares)	55,462	53,935	55,386	53,654	55,105	51,914
Effect of dilutive securities:
Management Incentive Plan shares (in shares)	0	11	0	11	6	18
Restricted stock units (in shares)	70	57	62	51	60	45
Average diluted shares (in shares)	55,532	54,003	55,448	53,716	55,171	51,977
Number of performance share units granted (in shares)	63	49	57	45	51	36