Debt (Principal Payments Of Debt) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Debt Disclosure [Abstract]
2015 remaining	$ 2,761
2016	169,653
2017	141,850
2018	62,214
2019	55,906
2020	237,425
2021	4,406
2022	307,011
2023	304,202
2024	254,394
Thereafter	357,285
Total	1,897,107
Unsecured notes payable under credit facilities	121,500	$ 189,000
Obligations under capital leases	21,000	21,000
Fair value of interest rate contracts	3,400
Net premium/(discount) on debt	(4,700)
Non-cash debt	3,700
Debt service guaranty liability	$ 72,105	$ 72,105