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Share Based Compensation Plan - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
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