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v3.20.2

Interim Consolidated Financial Statements - Additional Information (Detail) - USD ($) $ in Thousands |  | 6 Months Ended
--- | --- | ---
Jan. 01, 2020 | Jun. 30, 2020
Summary Of Significant Accounting Policy [Line Items] |  |
Decrease in retained earnings |  | $ (157)
Topic 326 [Member] |  |
Summary Of Significant Accounting Policy [Line Items] |  |
Decrease in retained earnings | $ (200) |

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