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Leases - Summary of Operating Lease Expense (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Leases [Abstract] |  |  |  |
Operating lease expense | $ 1,443 | $ 1,416 | $ 2,885 | $ 3,022

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration

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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918638-209977 + Details
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Balance Type: | debit
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