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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Assumptions
The following assumptions were used for the Monte Carlo model to determine the grant date fair value and associated stock-based compensation expense of the PSUs granted during the three months ended March 31, 2015:
Forecast period (years)
4.00

Risk-free interest rate
0.99
%
Oasis stock price volatility
50.11
%