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Loans Payable - Note 9 - Litigation Financing Note - Additional Information (Detail) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended
Dec. 12, 2020
Jun. 14, 2019
Jan. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Interest Expense       $ 2,380,476 $ 1,335,618  
Warrants exercise price       $ 0.0001   $ 0.0001
Debt discount amount         796,812  
Amortization of Debt Discount       $ 95,683 71,606  
Loans payable       42,154,585   $ 42,593,268
Amount receivable related to a loss contingency       12,146,029   11,489,029
Litigation Financing [Member]            
Debt discount amount       840,484   890,962
Litigation Financing [Member] | Loans Payable [Member]            
Debt discount amount       318,804   347,786
Loans payable       11,625,729   10,968,729
Amount receivable related to a loss contingency       12,785,016   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      
Warrants exercise price     $ 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          
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       1,505,032 591,871  
Proceeds from advance           2,000,000
Payments of Financing Costs           200,000
Debt discount amount           $ 1,063,811
Amortization of Debt Discount       50,479 16,716  
Interest from the fee amortization       $ 28,982 $ 8,511  
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