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Stock-based Compensation - Management Unit Awards - Additional Disclosures (Details) - Management Unit Awards
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2015
USD ($)
$ / shares
Additional disclosures  
Weighted average grant date fair value (in dollars per share) | $ / shares $ 15.00
Unrecognized expenses | $ $ 2.8
Weighted-average remaining recognition period (in years) 1 year 2 months 12 days