Goodwill and Other Intangibles (Details 4) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Net Decrease in Lease Revenues
2014 (remainder)	$ 14,146
2015	55,529
2016	53,738
2017	50,318
2018	46,703
Thereafter	176,103
Total	396,537
Increase to Amortization/ Property Expenses
2014 (remainder)	27,749
2015	110,442
2016	106,295
2017	102,432
2018	99,396
Thereafter	512,697
Total	959,011
Net
2014 (remainder)	41,895
2015	165,971
2016	160,033
2017	152,750
2018	146,099
Thereafter	688,800
Total	$ 1,355,548