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Retirement Savings Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Compensation and Retirement Disclosure [Abstract] |  |  |
Employees' contributions at a rate | 3.00% |  |
Matching Contribution Percentage | 50.00% |  |
Employees' contributions at a rate | 2.00% |  |
Matching Contribution Amount | $ 2.5 | $ 2.0 | $ 1.6
Matching Contribution Percentage | 100.00% |  |

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- Details
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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Defined contribution plan employer match percentage up to 3% of employee compensation. + References No definition available. + Details
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- Definition Defined Contribution Plan Maximum Employer Match Percentage For First Compensation Slab + References No definition available. + Details
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- Definition Defined Contribution Plan Maximum Employer Match Percentage For Next Compensation Slab + References No definition available. + Details
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