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 |