v3.8.0.1
Stock-Based Compensation - Summary of the Activity of Unvested Stock Options (Details)
12 Months Ended
Dec. 31, 2017
$ / shares
shares
Weighted Average Remaining Contractual Life (years)  
Weighted average remaining contractual life, exercisable as of December 31, 2017 (years) 5 years 5 months 21 days
Successor  
Number of Options  
Outstanding as of December 31, 2016 (shares) | shares 0
Granted (shares) | shares 1,202,613
Exercised (shares) | shares 0
Forfeited (shares) | shares (374,993)
Outstanding as of December 31, 2017 (shares) | shares 827,620
Number of Options, Exercisable as of December 31, 2017 (shares) | shares 241,931
Weighted Average Remaining Contractual Life (years)  
Granted 5 years 6 months 9 days
Forfeited 5 years 5 months 21 days
Outstanding as of December 31, 2017 (Successor) 5 years 6 months 14 days
Weighted Average Exercise Price  
Outstanding as of December 31, 2016 (usd per share) $ 0.00
Granted (usd per share) 15.75
Exercised (usd per share) 0.00
Forfeited (usd per share) 15.78
Outstanding as of December 31, 2017 (usd per share) 15.74
Weighted average exercise price, exercisable as of December 31, 2017 (usd per share) 15.78
Weighted Average Grant Date Fair Value  
Outstanding as of December 31, 2016 (usd per share) 0.00
Granted (usd per share) 4.99
Exercised (usd per share) 0.00
Forfeited (usd per share) 5.04
Outstanding as of December 31, 2017 (usd per share) 4.97
Weighted average grant date fair value, exercisable as of December 31, 2017 (usd per share) $ 5.04