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Long-Term Debt - Narrative (Details) - USD ($)
Jan. 13, 2017
Sep. 30, 2019
Feb. 28, 2019
Senior Secured Debenture due 2021 | Secured Debt      
Debt Instrument [Line Items]      
Principal amount $ 10,723,000    
Note Payable - GF Comstock 2 LP | Secured Debt      
Debt Instrument [Line Items]      
Interest rate   11.00%  
Equity interest in subsidiaries pledged as collateral (as a percent) 100.00%    
Discount on issuance of debt $ 568,000    
Debt issuance costs 528,000    
Early repayment, make whole payment $ 688,000    
Remaining balance of make whole obligation   $ 332,301  
Initial periodic payment period 2 years    
Loan Commitment Agreement Due 2021 | Line of Credit      
Debt Instrument [Line Items]      
Interest rate 11.00%   11.00%
Maximum borrowing capacity     $ 10,000,000
Long-term line of credit borrowing outstanding   0  
Unused borrowing capacity   $ 9,500,000