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Credit Facilities - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jul. 31, 2019
Mar. 31, 2014
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Aug. 09, 2019
Jun. 14, 2018
Jul. 31, 2013
Line of Credit Facility [Line Items]                    
Debt issuance cost                 $ 1,300,000  
Amortization expense debt issuance     $ 0 $ 100,000 $ 400,000 $ 100,000        
Long term debt, face amount     143,503,000   143,503,000   $ 140,974,000      
GECC                    
Line of Credit Facility [Line Items]                    
Line of credit facility maximum borrowing capacity   $ 75,000,000.0 19,300,000.0   19,300,000.0   40,700,000.0      
Amount of credit facility outstanding     0   0   7,500,000      
Stand by letters of credit outstanding amount     $ 9,500,000   $ 9,500,000   $ 12,800,000      
Rate of credit facility         4.77%   5.53%      
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 Purchased                    
Line of Credit Facility [Line Items]                    
Applicable margin spread over base rate         0.50%          
GECC | Minimum                    
Line of Credit Facility [Line Items]                    
Applicable margin spread over base rate         0.25%          
GECC | Maximum                    
Line of Credit Facility [Line Items]                    
Applicable margin spread over base rate         0.50%          
WF Loan Agreement | Minimum                    
Line of Credit Facility [Line Items]                    
Fixed charge coverage ratio     125.00%   125.00%          
Line of credit facility, total excess availability     $ 10,000,000   $ 10,000,000          
Term Loan Agreement | Great American Capital Partners Finance Co LLC                    
Line of Credit Facility [Line Items]                    
Loan facility     $ 19,800,000   $ 19,800,000   $ 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     11.50%   11.50%   11.10%      
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]                    
Long term debt, face amount                   $ 100,000,000.0
4.25% Convertible Senior Notes (due 2018) | GECC | Letter of Credit                    
Line of Credit Facility [Line Items]                    
Loan facility   $ 35,000,000                
Subsequent Event | GECC                    
Line of Credit Facility [Line Items]                    
Proceeds from credit facility $ 5,000,000                  
Subsequent Event | Revised Revolving Credit Facility | Revolving Credit Facility                    
Line of Credit Facility [Line Items]                    
Line of credit facility maximum borrowing capacity               $ 60,000,000.0    
Secured Debt | Subsequent Event | Secured Term Debt, Maturing January 2023                    
Line of Credit Facility [Line Items]                    
Long term debt, face amount               $ 30,000,000.0