Quarterly report pursuant to Section 13 or 15(d)

Subsequent Event - Additional Information (Detail)

v3.20.1
Subsequent Event - Additional Information (Detail) - Pacific Mercantile Bank - Subsequent Event - USD ($)
Apr. 14, 2020
Apr. 30, 2020
Subsequent Event [Line Items]    
Line of credit, outstanding borrowings   $ 3,000,000
Paycheck Protection Program    
Subsequent Event [Line Items]    
Loan granted amount from bank $ 2,980,000.00  
Note issued date Apr. 13, 2020  
Note maturity date Apr. 13, 2022  
Note interest rate per annum 1.00%  
Note payable commencing date Nov. 01, 2020  
Note prepayment penalties $ 0  
Paycheck Protection Program | Minimum    
Subsequent Event [Line Items]    
Number of days eligible for deduction of qualifying expenses after receiving loan 56 days