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	$ 33,394
2014	13,312
2015	21,728
2016	5,413
2017	43,643
Thereafter	6,021
Long-term Debt, Total	123,511	132,821
Held For Sale [Member]
Maturities of Long-term Debt [Line Items]
Remainder of 2013	31,719
2014	0
2015	0
2016	0
2017	0
Thereafter	0
Long-term Debt, Total	31,719
Held For Use [Member]
Maturities of Long-term Debt [Line Items]
Remainder of 2013	1,675
2014	13,312
2015	21,728
2016	5,413
2017	43,643
Thereafter	6,021
Long-term Debt, Total	$ 91,792

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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.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

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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.

+ References

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

-Publisher FASB

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-SubTopic 10

-Section 50

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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