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Loans Payable - Note 9 - Litigation Financing Note - Additional Information (Detail) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended
Jun. 14, 2019
Jan. 31, 2020
Sep. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 06, 2019
Interest Expense       $ 5,360,192 $ 3,142,280 $ 2,727,235  
Warrants exercise price       $ 0.0001 $ 0.0001   $ 0.0001
Subsequent Event [Member] | 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          
Pending Litigation [Member]              
Proceeds from litigation financing receivables       $ 2,957,097      
Litigation financing receivables       2,957,097      
Interest Expense     $ 369,505 $ 369,505      
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            
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            
Period Of Time Within Which Claim Holder Shall Exercise The Option 30 days            
Poplar Falls LLC [Member] | Pending Litigation [Member] | Phase Two [Member] | Tranch B [Member]              
Claims amount option to request $ 1,500,000            
Period Of Time Within Which Claim Holder Shall Exercise The Option 45 days