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Detail of Interest and Other Income (Expense), Net (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Other Income And Expenses [Abstract]        
Interest income $ 11 $ 128 $ 28 $ 462
Miscellaneous income 2   11 679
Other (27) (15) (53) (13)
Interest and other income (expense), net $ (14) $ 113 $ (14) $ 1,128