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Long-Term Debt and Capital Lease Obligations (Details)
3 Months Ended 9 Months Ended
Nov. 30, 2015
USD ($)
lender
Apr. 16, 2013
USD ($)
Mar. 25, 2016
USD ($)
Mar. 25, 2016
USD ($)
Dec. 01, 2015
USD ($)
Jul. 31, 2015
USD ($)
Payments
Jun. 30, 2015
USD ($)
Jun. 30, 2013
USD ($)
Jun. 30, 2012
USD ($)
Debt Instrument [Line Items]                  
Debt term   5 years              
Current portion of long-term debt     $ 20,031,000 $ 20,031,000     $ 50,000    
Other assets     20,174,000 20,174,000     5,303,000    
New Credit Agreement                  
Debt Instrument [Line Items]                  
Debt term 5 years                
Maximum borrowing capacity $ 175,000,000                
Additional number of lenders | lender 5                
Debt instrument, additional borrowing amount $ 75,000,000                
CoCo Debt                  
Debt Instrument [Line Items]                  
Long-term Debt     22,817,000 22,817,000          
Current portion of long-term debt     7,407,000 7,407,000          
Other assets     24,562,000 24,562,000          
Other assets, current     7,407,000 $ 7,407,000          
Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Letters of credit, amount available for issue   $ 15,000,000              
Maximum borrowing capacity   95,000,000              
Subordinated Debt | Other note payable                  
Debt Instrument [Line Items]                  
Long-term Debt         $ 891,000 $ 5,632,000      
Debt Instrument, Additional Periodic Payment     667,000            
Number of installment payments | Payments           11      
Debt instrument, periodic payment     $ 517,000            
Stated finance charge rate           1.99%      
Minimum | New Credit Agreement                  
Debt Instrument [Line Items]                  
Fixed charge coverage ratio 1.25                
Line Of Credit Facility, Dividend Restrictions Threshold $ 10,000,000                
Unused borrowing capacity, fee 0.20%                
Minimum | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Line of credit, current capacity   $ 75,000,000              
Maximum | New Credit Agreement                  
Debt Instrument [Line Items]                  
Leverage ratio 3.00                
Unused borrowing capacity, fee 0.375%                
Furniture And Equipment | Capital Lease Obligations                  
Debt Instrument [Line Items]                  
Capital lease obligations               $ 1,160,000 $ 756,000
RBS Citizen                  
Debt Instrument [Line Items]                  
Letters of credit and indebtedness, outstanding             166,000    
RBS Citizen | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Line of credit, current capacity             75,000,000    
Letters of credit outstanding, amount             2,048,000    
Letters of credit, remaining borrowing capacity             $ 72,786,000    
RBS Citizen | Minimum | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Fixed charge coverage ratio     1.25 1.25          
RBS Citizen | Minimum | Revolving Credit Facility | Prime Rate                  
Debt Instrument [Line Items]                  
Variable rate of debt       1.00%          
RBS Citizen | Minimum | Revolving Credit Facility | LIBOR                  
Debt Instrument [Line Items]                  
Variable rate of debt       2.00%          
RBS Citizen | Maximum | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Leverage ratio     2 2          
RBS Citizen | Maximum | Revolving Credit Facility | Prime Rate                  
Debt Instrument [Line Items]                  
Variable rate of debt       1.50%          
RBS Citizen | Maximum | Revolving Credit Facility | LIBOR                  
Debt Instrument [Line Items]                  
Variable rate of debt       2.50%          
June 30, 2014 | RBS Citizen | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Required minimum level of Adjusted EBITDA       $ 20,000,000          
Limited payment of dividend       10,000,000          
Credit Agreement Two | Subordinated Debt | Other note payable                  
Debt Instrument [Line Items]                  
Long-term Debt     $ 1,993,000 1,993,000          
Letters of Credit | New Credit Agreement                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity $ 15,000,000                
Letters of Credit | Minimum | New Credit Agreement                  
Debt Instrument [Line Items]                  
Debt issuance costs, fee 1.50%                
Letters of Credit | Maximum | New Credit Agreement                  
Debt Instrument [Line Items]                  
Debt issuance costs, fee 2.25%                
Revolving Credit Facility | New Credit Agreement                  
Debt Instrument [Line Items]                  
Debt term 5 years                
Maximum borrowing capacity $ 100,000,000                
Term Loan | New Credit Agreement                  
Debt Instrument [Line Items]                  
Debt term 5 years                
Debt instrument, amount $ 75,000,000                
Debt Instrument, Percent Of Outstanding Amount, Payable Quarterly 1.875%                
Debt instrument, covenant compliance, conditional term rate one 50.00%                
Debt instrument, covenant compliance, conditional term rate two 0.00%                
Debt instrument, covenant compliance, conditional term rate based on net cash proceeds from asset sales subject to certain reinvestment rights 100.00%                
Debt instrument, covenant compliance, conditional term rate based on net cash proceeds from issuance of debt other than debt permitted under credit facility 100.00%                
Debt instrument, covenant compliance, conditional term rate based on net cash proceeds from events of loss subject to certain reinvestments rights 100.00%                
Long-term Debt     75,000,000 75,000,000          
Current portion of long-term debt     5,469,000 5,469,000          
Base Rate | Minimum | New Credit Agreement                  
Debt Instrument [Line Items]                  
Variable rate of debt 0.50%                
Base Rate | Maximum | New Credit Agreement                  
Debt Instrument [Line Items]                  
Variable rate of debt 1.25%                
LIBOR | Minimum | New Credit Agreement                  
Debt Instrument [Line Items]                  
Variable rate of debt 1.50%                
LIBOR | Maximum | New Credit Agreement                  
Debt Instrument [Line Items]                  
Variable rate of debt 2.25%                
Pipeline Services                  
Debt Instrument [Line Items]                  
Second cash payment $ 7,500,000                
Pipeline Services | New Credit Agreement                  
Debt Instrument [Line Items]                  
Letters of credit, remaining borrowing capacity     97,221,000 97,221,000          
Borrowings 102,000,000   0 0          
Pipeline Services | Revolving Credit Facility | New Credit Agreement                  
Debt Instrument [Line Items]                  
Borrowings 27,000,000                
Debt instrument, fee amount     $ 1,916,000 $ 1,916,000          
Pipeline Services | Term Loan | New Credit Agreement                  
Debt Instrument [Line Items]                  
Debt instrument, stated interest rate     2.318% 2.318%          
Borrowings $ 75,000,000                
Debt instrument, effective rate     2.74% 2.74%          
Debt instrument, fee amount     $ 1,332,000 $ 1,332,000