Annual report pursuant to Section 13 and 15(d)

Concentrations - Additional Information (Detail)

v3.20.1
Concentrations - Additional Information (Detail) - Product Concentration Risk - Account Receivable - Customer
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Concentration Risk [Line Items]    
Number of customers which represented more than 10% of the Company's accounts receivable 0 1
Concentration Risk Percentage   12.00%
Minimum    
Concentration Risk [Line Items]    
Concentration Risk Percentage 10.00%