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, 2013	Dec. 31, 2012
Maturities of Long-term Debt [Line Items]
Remainder of 2013	$ 27,896
2014	13,494
2015	22,166
2016	3,924
2017	43,872
Thereafter	12,159
Long-term debt, Total	123,511	132,821
Held For Sale [Member]
Maturities of Long-term Debt [Line Items]
Remainder of 2013	26,133
2014	0
2015	0
2016	0
2017	0
Thereafter	0
Long-term debt, Total	26,133
Held For Use [Member]
Maturities of Long-term Debt [Line Items]
Remainder of 2013	1,763
2014	13,494
2015	22,166
2016	3,924
2017	43,872
Thereafter	12,159
Long-term debt, Total	$ 97,378

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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-Publisher SEC

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

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