Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation and Cash-Based Incentive Compensation - Summary of Share Activity Related to Restricted Stock Units (Details)

v3.5.0.2
Share-Based Compensation and Cash-Based Incentive Compensation - Summary of Share Activity Related to Restricted Stock Units (Details) - Restricted Stock Units (RSUs) - $ / shares
9 Months Ended
Sep. 30, 2016
Dec. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Nonvested, beginning of period 3,474,079  
Granted 4,209,013  
Vested (20,554)  
Forfeited (264,908)  
Nonvested, end of period 7,397,630  
Weighted Average Grant Date Value $ 4.53 $ 7.42
Weighted Average Grant Date Fair Value, Granted 2.21  
Weighted Average Grant Date Fair Value, Vested 9.87  
Weighted Average Grant Date Fair Value, Forfeited $ 5.11