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Long-term Investment - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended
Mar. 31, 2020
Jun. 30, 2018
Simple Agreement For Future Equity [Member]    
Schedule of Equity and Cost Investments [Line Items]    
Invested in common stock $ 2,000  
Deep Vision, Inc (Deep Vision)    
Schedule of Equity and Cost Investments [Line Items]    
Invested in common stock   $ 3,000