Background and Basis of Presentation (Details)	6 Months Ended
	Jun. 30, 2019 Segments	Dec. 31, 2019 sites $ / shares	Jul. 01, 2019 $ / shares	Dec. 31, 2018 $ / shares
Entity Location [Line Items]
Common Stock, Par or Stated Value Per Share | $ / shares		$ 0.01	$ 0.01	$ 0.01
Number of Sites | sites		45
Number of Reportable Segments | Segments	3