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Basis of Presentation (Other Expense (Income), Net) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Accounting Policies [Abstract]    
Write-offs of deposits and pre-acquisition costs $ (1,368) $ (4,332)
Amortization of intangible assets (4,992) (4,557)
Loss on debt retirement (61,469) 0
Interest income 631 3,807
Interest expense (135) (797)
Equity in earnings of unconsolidated entities 827 567
Miscellaneous, net 2,398 2,788
Total other expense, net $ (2,639) $ (2,524)