Basis of Presentation (Other Expense (Income), Net) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accounting Policies [Abstract]
Write-offs of deposits and pre-acquisition costs	$ (2,917)	$ (2,609)
Amortization of intangible assets	(3,450)	(3,450)
Interest income	4,949	564
Interest expense	(144)	(143)
Equity in earnings of unconsolidated entities	37	961
Miscellaneous, net	552	3,369
Total other expense, net	$ (973)	$ (1,308)