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Benefit Plans - Additional Information (Detail) - USD ($) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Compensation And Retirement Disclosure [Abstract] |  |  |
Discretionary Company contributions | $ 0 | $ 0 | $ 0
Employer matching contribution | 1,800,000 | 1,900,000 | $ 1,600,000
Long term portion of deferred compensation plan liability | 4,900,000 | 3,500,000 |
Current portion of deferred compensation plan liability | 100,000 | 0 |
Fair value of long term portion of deferred compensation plan liability | 4,900,000 | 3,500,000 |
Fair value of current portion of deferred compensation plan liability | $ 100,000 | $ 0 |

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- Definition Deferred compensation liability fair value classified noncurrent. + References No definition available. + Details
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- Definition Defined contribution plan employer matching contribution amount. + References No definition available. + Details
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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer). + References No definition available. + Details
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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable within one year (or the operating cycle, if longer). Represents currently earned compensation under compensation arrangements that is not actually paid until a later date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 25 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6409733&loc=d3e19512-108361 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20028-108363 + Details
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