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Other Accrued Expenses and Liabilities (Detail) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Accrued Liabilities And Other Liabilities Current [Abstract]    
Accrued professional fees $ 1,466 $ 1,511
Customer deposits 193 137
Accrued warranties 386 407
Earnout liability 750 750
Other accrued expenses 1,220 1,693
Total $ 4,015 $ 4,498