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Debt Obligations (Outstanding Unsecured Notes in Series of Transactions) (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended
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Jun. 30, 2012
Schedule of principal payments of debt obligations |
Repurchase Amount | $ 16,476
Principal | 14,693
Loss | (1,499)
Deferred Financing Amortization | 16
2012 5.750% Notes [Member] |
Schedule of principal payments of debt obligations |
Repurchase Amount | 309
Principal | 301
Loss | (2)
Deferred Financing Amortization | 0
Debt instrument stated interest rate | 5.75%
2014 5.400% Notes |
Schedule of principal payments of debt obligations |
Repurchase Amount | 4,630
Principal | 4,302
Loss | (264)
Deferred Financing Amortization | 7
Debt instrument stated interest rate | 5.40%
2015 7.500% Notes [Member] |
Schedule of principal payments of debt obligations |
Repurchase Amount | 11,537
Principal | 10,090
Loss | (1,233)
Deferred Financing Amortization | $ 9
Debt instrument stated interest rate | 7.50%

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