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Loans Payable - Note 9 - Litigation Financing Note - Additional Information (Detail) - USD ($)
 1 Months Ended 12 Months Ended
Jun. 14, 2021
Dec. 12, 2020
Jun. 14, 2019
Jan. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 01, 2021
Interest Expense         $ 10,829,464 $ 6,915,535 $ 5,360,192  
Amortization of Debt Discount         195,863 323,171    
Loans payable         41,257,007 42,593,268    
Amount receivable related to a loss contingency         18,472,997 11,489,029    
Litigation Financing [Member]                
Debt discount amount         649,928 890,962    
Litigation Financing [Member] | Loans Payable [Member]                
Debt discount amount         293,793 347,786    
Loans payable           10,968,729   $ 18,323,097
Amount receivable related to a loss contingency         19,266,818 12,207,477    
Amended and Restated International Claims Enforcement Agreement [Member]                
Litigation Settlement Loans Payable       $ 2,200,000        
Litigation Settlement Loans Payable Transaction Costs       $ 200,000        
Common stock and warrants sold       3.99        
Second Amended and Restated International Claims Enforcement Agreement [Member]                
Claims Payment Maximum Amount   $ 20,000,000            
Litigation Settlement Loans Payable Transaction Costs   200,000     80,000      
Third Amended And Restated International Claims Enforcement Agreement [Member]                
Claims Payment Maximum Amount $ 25,000,000              
IncreaseDecreaseInClaimsAmountAgreedToBeFinancedInConnectionWithLitigationToBeSettled $ 5,000,000.0              
ClaimsAmountAgreedToBeFinancedInConnectionWithLitigationToBeSettledDescription The Third Restated Agreement requires the Claimholder to request $2.5 million of the Incremental Amount (the “First $2.5 Million”). Within 15 days after exhaustion of the First $2.5 Million, the Claimholder may either (a) request the remaining $2.5 million (the “Second $2.5 Million”) of the Incremental Amount or (b) notify the Funder that the Claimholder has decided to self-fund the Second $2.5 Million.              
Phase Three [Member] | Second Amended and Restated International Claims Enforcement Agreement [Member]                
Claims Payment Maximum Amount   $ 10,000,000            
Pending Litigation [Member] | Phase One [Member] | Proceeds One [Member]                
Description of conditions for distribution of proceeds to the claimholder and funder     first, 100.0% to the Funder, until the cumulative amount distributed to the Funder equals the total Claims Payments paid by the Funder under Phase I;          
Pending Litigation [Member] | Phase One [Member] | Proceeds Two [Member]                
Description of conditions for distribution of proceeds to the claimholder and funder     second, 100.0% to the Funder until the cumulative amount distributed to the Funder equals an IRR of 20% of Claims Payments paid by the Funder under Phase I (“Phase I Compensation”), per annum; and          
Pending Litigation [Member] | Phase One [Member] | Proceeds Three [Member]                
Description of conditions for distribution of proceeds to the claimholder and funder     thereafter, 100.0% to the Claimholder.          
Pending Litigation [Member] | Phase Two [Member] | Proceeds One [Member]                
Description of conditions for distribution of proceeds to the claimholder and funder     first, 100.0% to the Funder until the cumulative amount distributed to the Funder equals the total Claims Payments paid by the Funder under Phases I and II;          
Pending Litigation [Member] | Phase Two [Member] | Proceeds Two [Member]                
Description of conditions for distribution of proceeds to the claimholder and funder     second, 100.0% to the Funder until the cumulative amount distributed to the Funder equals an additional 300.0% of Phase I Investment Amount; plus an additional 300% of the Tranche A Committed Amount (i.e. 300.0% of $3.5 million), less any amounts remaining of the Tranche A Committed Amount that   the Funder did not pay as Claims Payments; plus an additional 300.0% of the Tranche B Committed Amount (i.e. 300.0% of $1.5 million), if the Claimholder exercises the Tranche B funding option, less any amounts remaining of the Tranche B Committed Amount that the Funder did not pay as Claims Payments;            
Pending Litigation [Member] | Phase Two [Member] | Proceeds Three [Member]                
Description of conditions for distribution of proceeds to the claimholder and funder     third, for each $10,000 in specified fees and expenses paid by the Funder under Phase I and Phase II and any amounts over each $10,000 of the Tranche A Committed Amount and the Tranche B Committed Amount (if the Claimholder exercises the Tranche B funding option), 0.01% of the total Proceeds from any recoveries after repayment of (i) and (ii) above, to the Funder; and          
Pending Litigation [Member] | Phase Two [Member] | Proceeds Four [Member]                
Description of conditions for distribution of proceeds to the claimholder and funder     thereafter, 100% to the Claimholder.          
Poplar Falls LLC [Member] | Pending Litigation [Member]                
Claims Payment Maximum Amount     $ 6,500,000          
Interest Expense         7,354,940 3,668,242    
Proceeds from advance           2,000,000.0    
Payments of Financing Costs           200,000    
Debt discount amount           1,063,811    
Amortization of Debt Discount         241,034 172,849    
Interest from the fee amortization         $ 133,993 $ 52,214    
Poplar Falls LLC [Member] | Pending Litigation [Member] | Phase One [Member]                
Claims Payment Maximum Amount     1,500,000          
Cost Of Funding The Claims For Litigation     80,000          
Poplar Falls LLC [Member] | Pending Litigation [Member] | Phase Two [Member]                
Claims Payment Maximum Amount     5,000,000          
Cost Of Funding The Claims For Litigation     80,000          
Poplar Falls LLC [Member] | Pending Litigation [Member] | Phase Two [Member] | Tranch A [Member]                
Claims amount option to request     3,500,000          
Poplar Falls LLC [Member] | Pending Litigation [Member] | Phase Two [Member] | Tranch B [Member]                
Claims amount option to request     $ 1,500,000