Basis of Presentation (Other Expense (Income), Net) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Accounting Policies [Abstract]
Write-off of deposits and pre-acquisition costs	$ 3,041	$ 1,869
Amortization of intangible assets	3,450	3,225
Interest income	(923)	(1,099)
Interest expense	174	187
Equity in earnings of unconsolidated entities	(170)	(1,107)
Miscellaneous, net	302	(3,958)
Other Nonoperating Income (Expense)	$ (5,874)	$ 883