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Schedule of Change in Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands | 12 Months Ended |
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Dec. 31, 2020 | Dec. 31, 2019
Income Tax Uncertainties [Abstract] |  |
Unrecognized income tax benefits at January 1, 2020 | $ 1,563 |
Increase related to positions taken in prior period | 2,580 |
Increase related to positions taken in current period | 283 |
Decrease related to expiration of statute of limitations | (133) |
Unrecognized income tax benefits at December 31, 2020 | 4,293 |
Accrued interest | 295 | $ 200
Unrecognized income tax benefits recorded in other long-term liabilities at December 31, 2020 | $ 4,588 |

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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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