|
Equity-Based Compensation - Summary of Option Activity Under Plans (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
|
12 Months Ended |
|
Dec. 31, 2014
|
Dec. 31, 2013
|
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
|
|
| UNITS, Outstanding, December 31, 2013 |
3,007 |
|
| UNITS, Granted |
417 |
|
| UNITS, Exercised |
(633) |
|
| UNITS, Forfeitures |
(74) |
|
| UNITS, Expirations |
(2) |
|
| UNITS, Outstanding, December 31, 2014 |
2,715 |
|
| UNITS, Exercisable, December 31, 2014 |
1,624 |
|
| WEIGHTED AVERAGE EXERCISE PRICE, Outstanding, December 31, 2013 |
11.42 |
|
| WEIGHTED AVERAGE EXERCISE PRICE, Granted |
29.46 |
|
| WEIGHTED AVERAGE EXERCISE PRICE, Exercised |
10.93 |
|
| WEIGHTED AVERAGE EXERCISE PRICE, Forfeitures |
16.16 |
|
| WEIGHTED AVERAGE EXERCISE PRICE, Expirations |
14.05 |
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| WEIGHTED AVERAGE EXERCISE PRICE, Outstanding, December 31, 2014 |
14.23 |
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| WEIGHTED AVERAGE EXERCISE PRICE, Exercisable, December 31, 2014 |
11.26 |
|
| AGGREGATE INTRINSIC VALUE, Outstanding, December 31, 2013 |
70,117 |
|
| AGGREGATE INTRINSIC VALUE, Outstanding, December 31, 2014 |
52,488 |
|
| Minimum [Member] |
|
|
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
|
|
| REMAINING CONTRACTUAL LIFE (YEARS), Outstanding |
7 months 6 days |
7 months 6 days |
| REMAINING CONTRACTUAL LIFE (YEARS), Granted |
9 years 8 months 19 days |
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| Maximum [Member] |
|
|
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
|
|
| REMAINING CONTRACTUAL LIFE (YEARS), Outstanding |
10 years |
10 years |
| REMAINING CONTRACTUAL LIFE (YEARS), Granted |
9 years 2 months 5 days |
|