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Credit Facilities - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Aug. 09, 2019
Aug. 31, 2019
Sep. 30, 2019
Sep. 30, 2018
Jun. 30, 2017
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Jun. 14, 2018
Mar. 31, 2014
Line of Credit Facility [Line Items]                    
Loss on extinguishment of debt     $ (13,205,000) $ (453,000)   $ (13,205,000) $ (453,000)      
Debt issuance cost                 $ 1,300,000  
Amortization expense debt issuance             100,000      
GECC                    
Line of Credit Facility [Line Items]                    
Line of credit facility maximum borrowing capacity   $ 44,500,000.0           $ 40,700,000.0   $ 75,000,000.0
Amount of credit facility outstanding     5,000,000.0     5,000,000.0   7,500,000    
Stand by letters of credit outstanding amount     10,500,000     $ 10,500,000   $ 12,800,000    
Rate of credit facility           4.59%   5.53%    
Amended ABL Credit Agreement                    
Line of Credit Facility [Line Items]                    
Line of credit facility maximum borrowing capacity   60,000,000.0                
Minimum liquidity requirement   25,000,000                
Minimum availability   9,000,000                
Fixed charge coverage ratio 110.00%                  
Amortization expense debt issuance     100,000 $ 400,000   $ 500,000 $ 500,000      
Amended ABL Credit Agreement | Minimum | London Interbank Offered Rate (LIBOR)                    
Line of Credit Facility [Line Items]                    
Applicable margin spread over base rate 1.50%                  
Amended ABL Credit Agreement | Minimum | Base Rate [Member]                    
Line of Credit Facility [Line Items]                    
Applicable margin spread over base rate 0.50%                  
Amended ABL Credit Agreement | Maximum | London Interbank Offered Rate (LIBOR)                    
Line of Credit Facility [Line Items]                    
Applicable margin spread over base rate 2.00%                  
Amended ABL Credit Agreement | Maximum | Base Rate [Member]                    
Line of Credit Facility [Line Items]                    
Applicable margin spread over base rate 1.00%                  
Term Loan Agreement | Great American Capital Partners Finance Co LLC                    
Line of Credit Facility [Line Items]                    
Net Amount     $ 0     $ 0   $ 20,000,000 $ 20,000,000  
Fixed charge coverage ratio     125.00%     125.00%        
Line of credit facility, total excess availability     $ 10,000,000     $ 10,000,000        
Percentage of principal amount redeemed           10.00%        
Weighted average interest rate     11.40%     11.40%   11.10%    
Loss on extinguishment of debt   $ 400,000                
Debt issuance cost $ 1,100,000                  
Term Loan Agreement | Year One | Great American Capital Partners Finance Co LLC                    
Line of Credit Facility [Line Items]                    
Debt prepayment percentage           2.00%        
Term Loan Agreement | Year Two | Great American Capital Partners Finance Co LLC                    
Line of Credit Facility [Line Items]                    
Debt prepayment percentage           2.00%        
Term Loan Agreement | Year Three | Great American Capital Partners Finance Co LLC                    
Line of Credit Facility [Line Items]                    
Debt prepayment percentage           1.00%        
Term Loan Agreement | London Interbank Offered Rate (LIBOR) | Great American Capital Partners Finance Co LLC                    
Line of Credit Facility [Line Items]                    
Applicable margin spread over base rate           9.00%        
4.25% Convertible Senior Notes (due 2018)                    
Line of Credit Facility [Line Items]                    
Loss on extinguishment of debt         $ 100,000          
4.25% Convertible Senior Notes (due 2018) | GECC | Letter of Credit                    
Line of Credit Facility [Line Items]                    
Net Amount                   $ 35,000,000