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Stock Incentive Plans - Valuation Assumptions (Details) - February 27, 2015 [Member]
9 Months Ended
Sep. 30, 2015
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Volatility 22.90%
Risk-Free Rate 1.01%
Fair Value at Grant Date (in dollars per share) $ 12.13