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Fair Value (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013
--- | --- | ---
Assets: |  |
Interest rate cap agreement | $ 33 |
Liabilities: |  |
Contingently convertible Series E units liability | 74,638 | 66,938
Preferred shares derivative liability | 55,670 | 28,150
Recurring | Significant Unobservable Inputs (Level 3) |  |
Liabilities: |  |
Contingently convertible Series E units liability | 74,638 | 66,938
Preferred shares derivative liability | 55,670 | 28,150
Recurring | Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Interest rate cap agreement | $ 33 |

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