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Fair Value Measurements (Tables)
 6 Months Ended
Jun. 30, 2018
Fair Value Disclosures [Abstract]  
Schedule of Valuation Assumptions used in Determining Fair Value
The following valuation assumptions were used in determining the fair value of the Second Lien Notes, including the conversion option, as of June 30, 2018 (Successor):
Risk-free interest rate
2.16
%
Credit spreads
13.93
%
PIK premium spread
2.00
%
Volatility
50.00
%