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Credit Facility - Additional Information (Detail) - USD ($)
1 Months Ended 12 Months Ended
Mar. 31, 2014
Dec. 31, 2018
Dec. 31, 2017
Jun. 14, 2018
Line of Credit Facility [Line Items]        
Debt issuance costs       $ 1,300,000
Amortization expense debt issuance   $ 900,000    
GECC        
Line of Credit Facility [Line Items]        
Line of credit facility maximum borrowing capacity $ 75,000,000.0 40,700,000 $ 14,100,000  
Amount of credit facility outstanding   7,500,000 5,000,000  
Stand by letters of credit outstanding amount   $ 12,800,000 $ 20,000,000  
Rate of credit facility   5.53% 3.79%  
GECC | London Interbank Offered Rate (LIBOR)        
Line of Credit Facility [Line Items]        
Applicable margin spread over base rate 2.25% 1.00%    
GECC | Base Rate        
Line of Credit Facility [Line Items]        
Applicable margin spread over base rate 1.25%      
GECC | Federal Funds Rate        
Line of Credit Facility [Line Items]        
Applicable margin spread over base rate   0.50%    
GECC | Minimum        
Line of Credit Facility [Line Items]        
Percentage of unused credit line fee   0.25%    
GECC | Maximum        
Line of Credit Facility [Line Items]        
Percentage of unused credit line fee   0.50%    
WF Loan Agreement | Minimum        
Line of Credit Facility [Line Items]        
Fixed charge coverage ratio   125.00%    
Line of credit cacility, total excess availibility   $ 10,000,000    
Letter of Credit | 4.25% Convertible Senior Notes (due 2018) | GECC        
Line of Credit Facility [Line Items]        
Line of credit $ 35,000,000      
Great American Capital Partners Finance Co LLC | Term Loan Agreement        
Line of Credit Facility [Line Items]        
Line of credit   $ 20,000,000   $ 20,000,000
Fixed charge coverage ratio   125.00%    
Line of credit cacility, total excess availibility   $ 10,000,000    
Percentage of principal amount redeemed   10.00%    
Weighted average interest rate   11.10%    
Great American Capital Partners Finance Co LLC | Term Loan Agreement | London Interbank Offered Rate (LIBOR)        
Line of Credit Facility [Line Items]        
Applicable margin spread over base rate   9.00%    
Year One | Great American Capital Partners Finance Co LLC | Term Loan Agreement        
Line of Credit Facility [Line Items]        
Debt prepayment percentage   2.00%    
Year Two | Great American Capital Partners Finance Co LLC | Term Loan Agreement        
Line of Credit Facility [Line Items]        
Debt prepayment percentage   2.00%    
Year Three | Great American Capital Partners Finance Co LLC | Term Loan Agreement        
Line of Credit Facility [Line Items]        
Debt prepayment percentage   1.00%