Debt Financing (Aggregate Annual Principal Payments On Debt Associated With Assets Held For Use And Held For Sale) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014
Maturities of Long-term Debt [Line Items]
Remainder of 2014	$ 34,093
2015	24,179
2016	4,685
2017	40,846
2018	1,606
Thereafter	0
Long-term debt, Total	105,409
Held For Sale [Member]
Maturities of Long-term Debt [Line Items]
Remainder of 2014	23,666
2015	0
2016	0
2017	0
2018	0
Thereafter	0
Long-term debt, Total	23,666
Held For Use [Member]
Maturities of Long-term Debt [Line Items]
Remainder of 2014	10,427
2015	24,179
2016	4,685
2017	40,846
2018	1,606
Thereafter	0
Long-term debt, Total	$ 81,743