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Fair Value Measurements - Reconciliation of Fair Value Measurements for Long-Term Debt Holder Conversion Feature (Details) - Predecessor - Debt holder conversion feature
$ in Thousands
3 Months Ended
Mar. 31, 2016
USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Beginning balance $ 29,355
Gain on derivative holder conversion feature (880)
Conversions (21,194)
Ending balance $ 7,281