Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies - Additional Information (Detail)

v3.21.1
Significant Accounting Policies - Additional Information (Detail)
12 Months Ended
Dec. 31, 2020
USD ($)
patent
Segment
Dec. 31, 2019
USD ($)
Significant Accounting Policies [Line Items]    
Number of operating segments | Segment 1  
Impairment of fixed assets $ 0 $ 0
Impairment of goodwill 0 2,873,000
Equity investment, cost basis 200,000 200,000
Equity investments $ 200,000 200,000
Percentage of number of shares that may be removed from agreement upon achieving certain financial milestones 20.00%  
Uncertain tax positions $ 0 0
Accrual for interest or penalties 0 0
Income tax penalties and interest expense 0 0
Impairment of intangible assets 2,201,000 0
Patent held for sale 156,000 0
Operating loss 8,183,000 5,703,000
VivoPharm    
Significant Accounting Policies [Line Items]    
Impairment of intangible assets 2,100,000  
Operating loss 1,500,000  
State and Local Jurisdiction    
Significant Accounting Policies [Line Items]    
Net operating losses sold 0  
Patents    
Significant Accounting Policies [Line Items]    
Impairment of intangible assets $ 71,000 0
Number of intangible assets impaired | patent 4  
Allowance for legal fees $ 50,000  
Patent held for sale, before allowance for legal fees 206,000  
Patent held for sale $ 156,000  
Software, Customer List and Trade Name | VivoPharm    
Significant Accounting Policies [Line Items]    
Intangible assets, useful life 10 years  
Minimum    
Significant Accounting Policies [Line Items]    
Fixed assets, estimated useful lives 5 years  
Minimum | Patents    
Significant Accounting Policies [Line Items]    
Intangible assets, useful life 7 years  
Maximum    
Significant Accounting Policies [Line Items]    
Fixed assets, estimated useful lives 12 years  
Maximum | Patents    
Significant Accounting Policies [Line Items]    
Intangible assets, useful life 10 years  
Letter of Credit | Restricted Cash    
Significant Accounting Policies [Line Items]    
Letter of credit   $ 350,000