Annual report pursuant to Section 13 and 15(d)

Long Term Debt - Capitala Term Loan - Additional Information (Details)

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Long Term Debt - Capitala Term Loan - Additional Information (Details) - USD ($)
3 Months Ended 12 Months Ended
Jun. 30, 2018
Mar. 31, 2018
Sep. 30, 2019
Sep. 30, 2018
Debt Instrument [Line Items]        
Percentage of prepayment premium up to the first anniversary of the closing date     2.00%  
Percentage of prepayment premium up to the second anniversary of the closing date     1.00%  
Percentage of prepayment premium after second anniversary of the closing date     0.00%  
Maximum        
Debt Instrument [Line Items]        
Prepayment term loan     $ 3,000,000  
Additional prepayment prior to first anniversary of the closing date     1,450,000  
Additional prepayment after first anniversary of the closing date     2,900  
Capitala Term Loan        
Debt Instrument [Line Items]        
Credit line maximum     $ 29,872,000  
Debt instrument, fixed charge coverage ratio     140.00% 130.00%
Debt instrument, fixed charge coverage ratio thereafter     150.00%  
Debt instrument, incurred annual capital expenditure covenants     $ 1,200,000  
Debt instrument, total leverage ratio     250.00% 325.00%
Debt instrument, total leverage ratio thereafter     200.00%  
Debt periodic payment     $ 725,000  
Maturity date     Nov. 30, 2021  
Credit line weighted average interest rate     16.94%  
Debt issuance cost     $ 1,088,000  
Unamortized debt issuance cost     $ 742,000  
Capitala Term Loan | Maximum        
Debt Instrument [Line Items]        
Debt instrument, total leverage ratio 275.00% 300.00%    
Capitala Term Loan | LIBOR        
Debt Instrument [Line Items]        
Percentage points added to the reference rate     1.00%  
Capitala Term Loan | LIBOR | Cash Pay        
Debt Instrument [Line Items]        
Percentage points added to the reference rate     12.50%  
Capitala Term Loan | LIBOR | Payable in Kind        
Debt Instrument [Line Items]        
Percentage points added to the reference rate     3.00%  
Capitala Term Loan | LIBOR | Maximum        
Debt Instrument [Line Items]        
Percentage points added to the reference rate     0.50%  
Capitala Term Loan | Base Rate | Cash Pay        
Debt Instrument [Line Items]        
Percentage points added to the reference rate     11.50%  
Capitala Term Loan | Base Rate | Payable in Kind        
Debt Instrument [Line Items]        
Percentage points added to the reference rate     3.00%  
Capitala Term Loan | Base Rate | Minimum        
Debt Instrument [Line Items]        
Percentage points added to the reference rate     1.50%  
Capitala Term Loan | Federal Funds Rate        
Debt Instrument [Line Items]        
Percentage points added to the reference rate     0.50%