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v3.20.4

Leases - Additional Information (Detail) $ in Thousands | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) | Jul. 07, 2020 ft² | Dec. 31, 2019 USD ($)
Operating lease right of use assets | $ 25,176 | $ 25,176 |  | $ 25,707
Operating lease liabilities | 31,679 | 31,679 |  | $ 30,552
Increase in operating lease liabilities |  | $ 3,000 |  |
Marlborough Massachusetts [Member] |  |  |  |
Increase in right of use asset | 2,800 |  |  |
Increase in operating lease liabilities | $ 2,800 |  |  |
Expansion of existing premises | ft² |  |  | 66,939 |

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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- Details
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