Quarterly report pursuant to Section 13 or 15(d)

Subsequent Event - Additional Information (Detail)

v3.20.2
Subsequent Event - Additional Information (Detail)
$ in Thousands
1 Months Ended 6 Months Ended
Aug. 12, 2020
USD ($)
Jul. 31, 2020
USD ($)
Jul. 22, 2020
USD ($)
shares
Jun. 10, 2020
USD ($)
Nov. 09, 2018
USD ($)
Aug. 31, 2020
shares
Jul. 31, 2020
Jun. 30, 2020
USD ($)
shares
Subsequent Event [Line Items]                
Proceeds from issuance of common stock | $               $ 3,881
Proceeds from issuance from equity | $       $ 6,900        
Restricted Stock Units (RSUs)                
Subsequent Event [Line Items]                
Granted               1.6
Granted               1,604,000
Scenario Forecast | Restricted Stock Units (RSUs) | 2018 Long-Term Incentive Plan                
Subsequent Event [Line Items]                
Granted           1,200,000    
Granted           1,000,000    
SWK Loan                
Subsequent Event [Line Items]                
Repayments of loan | $         $ 700      
Paycheck Protection Program | Minimum [Member]                
Subsequent Event [Line Items]                
Nonpayroll costs eligible for loan forgiveness percentage             0.25  
Paycheck Protection Program | Maximum                
Subsequent Event [Line Items]                
Nonpayroll costs eligible for loan forgiveness percentage             0.40  
Subsequent Event                
Subsequent Event [Line Items]                
Number of warrants     45,000,000          
Each warrant exercisable for number of shares of common stock     1          
Proceeds from issuance of common stock | $     $ 15,800          
Proceeds from issuance from equity | $     $ 15,800          
Subsequent Event | Credit Agreement, Fourth Amendment | Pacific Mercantile Bank                
Subsequent Event [Line Items]                
Proceeds from issuance from equity | $   $ 8,000            
Subsequent Event | Credit Agreement Sixth Amendment | SWK Loan                
Subsequent Event [Line Items]                
Repayments of loan | $ $ 700              
Subsequent Event | Series F Preferred Stock                
Subsequent Event [Line Items]                
Number of units outstanding     18,000          
Convertible preferred stock, shares issued upon conversion     18,000