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Long-Term Debt (Details Textual) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Sep. 01, 2019
Feb. 28, 2019
Sep. 01, 2018
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2017
Jul. 31, 2019
Dec. 31, 2018
Jul. 21, 2017
Line of Credit Facility [Line Items]                      
Debt borrowings           $ 52,592,000 $ 557,000        
Long-term Debt       $ 178,377,000   178,377,000       $ 168,767,000  
Revolving Credit Facility, Capacity Available for Letter of Credit       30,000,000   30,000,000          
Loss on debt restructuring       0 $ 0 $ 2,270,000 0        
Insurance Premium Financing Agreement         $ 17,800,000   $ 17,800,000        
Insurance Premium Financing Agreement, Periodic Payment     $ 2,000,000                
Insurance Premium Financing Agreement, Interest Rate         4.75%   4.75%        
Insurance Premium Payable                   $ 10,000,000  
ABL Facility [Member] | Minimum | London Interbank Offered Rate (LIBOR) [Member]                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)           1.50%          
ABL Facility [Member] | Minimum | Base Rate                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)           0.50%          
ABL Facility [Member] | Maximum | London Interbank Offered Rate (LIBOR) [Member]                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)           2.25%          
ABL Facility [Member] | Maximum | Base Rate                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)               1.25%      
ABL Facility [Member] | Revolving credit facility                      
Line of Credit Facility [Line Items]                      
Debt borrowings   $ 141,400,000                  
Line of Credit Facility, Maximum Borrowing Capacity   200,000,000                 $ 200,000,000
Line of Credit Facility, Increase (Decrease), Net   $ 100,000,000.0                  
Total availability under revolving credit facility       34,400,000   $ 34,400,000          
ABL Facility [Member] | Revolving credit facility | Minimum | London Interbank Offered Rate (LIBOR) [Member]                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)   1.50%                  
ABL Facility [Member] | Revolving credit facility | Minimum | Base Rate                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)   0.50%                  
ABL Facility [Member] | Revolving credit facility | Maximum | London Interbank Offered Rate (LIBOR) [Member]                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)   2.00%                  
ABL Facility [Member] | Revolving credit facility | Maximum | Base Rate                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)   1.00%                  
Average annualized interest rate (as a percentage)           5.30%          
ABL Facility [Member] | Revolving credit facility | FILO Loans [Member]                      
Line of Credit Facility [Line Items]                      
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases   $ 15,000,000                  
ABL Facility [Member] | Revolving credit facility | Non-FILO Loans [Member] | Minimum | London Interbank Offered Rate (LIBOR) [Member]                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)   2.50%                  
ABL Facility [Member] | Revolving credit facility | Non-FILO Loans [Member] | Minimum | Base Rate                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)   1.50%                  
ABL Facility [Member] | Revolving credit facility | Non-FILO Loans [Member] | Maximum | London Interbank Offered Rate (LIBOR) [Member]                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)   3.00%                  
ABL Facility [Member] | Revolving credit facility | Non-FILO Loans [Member] | Maximum | Base Rate                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)   2.00%                  
ABL Facility [Member] | Bridge Loan [Member]                      
Line of Credit Facility [Line Items]                      
Line of Credit Facility, Maximum Borrowing Capacity   $ 20,000,000                 20,000,000
ABL Facility [Member] | Letter of Credit [Member]                      
Line of Credit Facility [Line Items]                      
Line of Credit Facility, Maximum Borrowing Capacity   30,000,000                 30,000,000
ABL Facility [Member] | Term Loan Facility [Member]                      
Line of Credit Facility [Line Items]                      
Line of Credit Facility, Maximum Borrowing Capacity                     56,800,000
ABL Facility [Member] | Asset-Based Facility [Member]                      
Line of Credit Facility [Line Items]                      
Line of Credit Facility, Maximum Borrowing Capacity                     $ 35,000,000
Term Loan Credit Facility [Member] | Line of Credit [Member]                      
Line of Credit Facility [Line Items]                      
Debt borrowings   $ 51,100,000                  
Long-term Debt       61,100,000   $ 61,100,000          
Average annualized interest rate (as a percentage)           10.70%          
Term Loan Credit Facility [Member] | Line of Credit [Member] | Tranche A Term Loans [Member]                      
Line of Credit Facility [Line Items]                      
Long-term Debt       40,300,000   $ 40,300,000          
Term Loan Credit Facility [Member] | Line of Credit [Member] | Tranche A Term Loans [Member] | London Interbank Offered Rate (LIBOR) [Member]                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)           7.50%          
Term Loan Credit Facility [Member] | Line of Credit [Member] | Tranche A FILO Term Loans [Member]                      
Line of Credit Facility [Line Items]                      
Long-term Debt       2,500,000   $ 2,500,000          
Term Loan Credit Facility [Member] | Line of Credit [Member] | Tranche A FILO Term Loans [Member] | London Interbank Offered Rate (LIBOR) [Member]                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)           8.50%          
Term Loan Credit Facility [Member] | Line of Credit [Member] | Tranche A FILO Term Loans [Member] | Base Rate                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)           7.50%          
Term Loan Credit Facility [Member] | Line of Credit [Member] | Tranche B Term Loans [Member]                      
Line of Credit Facility [Line Items]                      
Long-term Debt       8,300,000   $ 8,300,000          
Term Loan Credit Facility [Member] | Line of Credit [Member] | Asset-Based Facility [Member]                      
Line of Credit Facility [Line Items]                      
Long-term Debt       $ 10,000,000   $ 10,000,000          
Term Loan Credit Facility [Member] | Line of Credit [Member] | Tranche A Term Loans, Tranche B Term Loans, and Capital Expenditure Loans [Member] | Base Rate                      
Line of Credit Facility [Line Items]                      
Debt instrument variable rate margin (as a percentage)           6.50%          
Subsequent Event                      
Line of Credit Facility [Line Items]                      
Insurance Premium Financing Agreement                 $ 20,700,000    
Insurance Premium Financing Agreement, Periodic Payment $ 2,400,000                    
Insurance Premium Financing Agreement, Interest Rate 5.25%