Stock-Based Compensation - Summary of RSU Activity (Details) (Restricted Stock Units (RSUs), USD $)
12 Months Ended
Dec. 31, 2013
Restricted Stock Units (RSUs)
 
Outstanding Number of Shares  
Shares Outstanding, Beginning of Period 0
RSUs granted 575,350
RSUs vested 0
RSUs forfeited (1,000)
Shares Outstanding, End of Period 574,350
Weighted Average Fair Value  
Weighted Average Fair Value, Beginning of Period, USD per share $ 0.00
Weighted Average Fair Value, RSUs granted, USD per share $ 64.04
Weighted Average Fair Value, RSUs vested, USD per share $ 0.00
Weighted Average Fair Value, RSUs forfeited, USD per share $ 53.82
Weighted Average Fair Value, End of Period, USD per share $ 64.06