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Stock-Based Compensation - Summary of Assumptions (Details) - Performance Share Units [Member]
9 Months Ended
Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Forecast period (years) 4 years
Risk-free interest rate (as percent) 1.25%
Oasis stock price volatility (as percent) 59.38%