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Share Based Compensation Plan - Additional Information (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
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] |  |  |  |
Share based compensation expense | $ 328 | $ 701 | $ 857 | $ 1,997

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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