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Share-Based Payments	3 Months Ended
Share-Based Payments	Mar. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Payments	Share-Based Payments During the three months ended March 31, 2016, the Company granted 244,664 stock options with an exercise price equal to the closing market price of a share of Common Stock on the date of grant. The fair value of each option is estimated on the date of grant using the Black-Scholes option pricing model, which resulted in a weighted average grant date fair value per share of $4.61. During the three months ended March 31, 2016, the Company also granted 66,486 shares of time-based restricted stock and 56,346 shares of total return-based restricted stock with weighted average grant date fair values per share of $43.19 and $41.25, respectively. We recorded share-based compensation expense of $3.6 million and $3.9 million during the three months ended March 31, 2016 and 2015, respectively. At March 31, 2016, there was $7.8 million of total unrecognized share-based compensation costs, which will be recognized over a weighted average remaining contractual term of 2.7 years.