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v2.4.1.9

Employee Benefit Plan - Additional Information (Detail) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Compensation And Retirement Disclosure [Abstract] |  |  |
Company contribution percentage | 100.00%us-gaap_DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage |  |
Participant's contribution percentage | 5.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent |  |
Additional profit-sharing contribution | $ 0us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount | $ 0us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount | $ 0us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Aggregate contributions | $ 599,000us-gaap_DefinedContributionPlanCostRecognized | $ 709,000us-gaap_DefinedContributionPlanCostRecognized | $ 598,000us-gaap_DefinedContributionPlanCostRecognized

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- Details
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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + 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 employer's matching contributions to a defined contribution plan that vests in a given year. + References No definition available. + Details
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- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
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