Other Accrued Expenses and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accrued Liabilities And Other Liabilities Current [Abstract]
Accrued professional fees	$ 1,511	$ 1,504
Customer deposits	137	1,517
Accrued warranties	407	316
Earnout liability	750
Other accrued expenses	1,693	1,940
Total	$ 4,498	$ 5,277