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Fair Value Measurements - Schedule of Significant Assumption Used in Model is Probability (Detail) - Fair Value, Measurements, Recurring [Member] - Level 3 [Member] - Embedded Compound Derivative [Member] - USD ($)
$ in Thousands
3 Months Ended
Jun. 11, 2015
Mar. 31, 2017
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Probability of an event of default 10.00% 50.00%
End of term payment $ 245,000 $ 245,000
Risk-free interest rate 1.01% 1.03%
Minimum [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Prepayment penalties 1.00% 1.00%
Maximum [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Prepayment penalties 3.00% 3.00%