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Employee Benefit Plan - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Company matched employee's contribution	25.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Employee's contribution	$ 2,000us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeeAmount

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- Details

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X

- 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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Namespace Prefix:	us-gaap_
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Period Type:	duration

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- Definition

Maximum amount the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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