Defined Contribution Plan - Additional Information (Detail) - USD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2018 |
Dec. 31, 2017 |
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| Defined Contribution Benefit Plans [Line Items] | ||
| Defined contribution plan maximum employee contribution as percentage of base salary | 60.00% | |
| Defined benefit plan, contributions by employer | $ 1.9 | $ 1.9 |
| First Five Percent Of Each Participants Contributions [Member] | ||
| Defined Contribution Benefit Plans [Line Items] | ||
| Defined contribution plan employer matching contribution to employee contribution | 50.00% | |
| Defined contribution plan employee contributions percentage of eligible compensation | 5.00% | |
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- Definition Defined Contribution Benefit Plans [Line Items] No definition available.
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- Definition Defined Contribution Plan Employee Contributions Percentage Of Eligible Compensation No definition available.
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- Definition Defined Contribution Plan Employer Matching Contribution to Employee Contribution No definition available.
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- Definition Defined Contribution Plan Maximum Employee Contribution as Percentage of Base Salary No definition available.
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- Definition Amount of contribution received by defined benefit plan from employer which increases plan assets. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Details
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