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Stock-Based Compensation - Summary of RSU Activity (Details) (Restricted Stock Units (RSUs), USD $)
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12 Months Ended |
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Dec. 31, 2013
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Restricted Stock Units (RSUs)
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| 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 |