Debt (Principal Payments Of Debt) (Details) (USD $)				6 Months Ended
	Jun. 30, 2014		Dec. 31, 2013	Jun. 30, 2014 8.1% Senior Unsecured Notes [Member]
Maturities of Long-term Debt [Line Items]
2014 remaining	$ 134,159,000	[1]
2015	239,941,000
2016	249,441,000
2017	142,032,000
2018	60,277,000
2019	53,907,000
2020	35,363,000
2021	2,278,000
2022	304,815,000
2023	301,937,000
Thereafter	296,327,000
Total	1,820,477,000
Unsecured notes payable under credit facilities	152,000,000		0
Obligations under capital leases	21,000,000		21,000,000
Fair value of interest rate contracts	4,800,000
Net premium/(discount) on debt	(3,200,000)
Non-cash debt	4,700,000
Debt service guaranty liability	73,740,000		73,740,000
Senior unsecured notes				$ 90,000,000
Debt stated interest rate				8.10%
Debt maturity date				Sep. 15, 2019
Debt redemption date				Sep. 15, 2014

[1] Includes $90 million of our 8.1% senior unsecured notes due 2019, which we will redeem at our option in September 2014. See Note 18 for additional information.