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Long-Term Debt (Long-Term Debt Obligations) (Details) - USD ($)
Jan. 13, 2017
Sep. 30, 2017
Mar. 31, 2017
Debt Instrument [Line Items]      
Unused borrowing capacity   $ 7,500,000  
Line of Credit      
Debt Instrument [Line Items]      
Interest rate (as a percent)     11.00%
Maximum borrowing capacity     $ 7,500,000.0
Long-term line of credit borrowing outstanding   0  
Unused borrowing capacity   $ 7,000,000  
Senior Secured Debenture due 2021 | Secured Debt      
Debt Instrument [Line Items]      
Interest rate (as a percent) 11.00%    
Long term note $ 10,723,000    
Note Payable - GF Comstock 2 LP | Secured Debt      
Debt Instrument [Line Items]      
Discount on issuance of debt 568,000    
Debt issuance costs 528,000    
Early repayment, make whole payment $ 688,000    
Initial periodic payment period 2 years    
Equity interest in subsidiaries pledged as collateral (as a percent) 100.00%