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Debt - Additional Information (Detail) - USD ($)
9 Months Ended
Apr. 06, 2017
Mar. 31, 2017
Mar. 31, 2016
Oct. 20, 2015
Sep. 30, 2014
Debt Instrument [Line Items]          
Debt issuance cost     $ 300,000    
Percentage of voting capital stock   65.00%      
Description of periodic payments   The term loan facility requires repayment over five years with nineteen quarterly principal payments, which began in the three months ended March 31, 2015.      
Quarterly payment beginning period   Mar. 31, 2015      
Final principal payment   $ 90,000,000      
First Four Quarters [Member]          
Debt Instrument [Line Items]          
Quarterly principal payment   1,900,000      
Next Fourteen Quarters [Member]          
Debt Instrument [Line Items]          
Quarterly principal payment   3,800,000      
Credit Agreement [Member] | Bridge Loan [Member]          
Debt Instrument [Line Items]          
Line of credit facility amount   20,000,000      
Credit Agreement [Member] | Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Additional borrowing capacity       $ 100,000,000  
Line of credit facility amount       $ 250,000,000 $ 150,000,000
Amount borrowed under revolving credit facility   $ 100,000,000      
Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Commitment fee percentage of unused portion   0.25%      
Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Commitment fee percentage of unused portion   0.45%      
Credit Agreement [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]          
Debt Instrument [Line Items]          
Additional borrowing capacity $ 200,000,000        
Line of credit facility amount $ 450,000,000        
Credit Agreement [Member] | Letter of Credit [Member]          
Debt Instrument [Line Items]          
Line of credit facility amount   $ 20,000,000      
Credit Agreement [Member] | Term Loan Facility [Member]          
Debt Instrument [Line Items]          
Line of credit facility amount   150,000,000      
Amount borrowed under revolving credit facility   150,000,000      
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member]          
Debt Instrument [Line Items]          
Debt issuance cost   $ 5,000,000      
Debt amortization period   60 months      
Description of Base Rate   The revolving credit facility and term loans under the Credit Agreement bear interest at our election of a Base Rate plus an applicable margin or LIBOR plus an applicable margin. Swingline loans bear interest at a Base Rate plus an applicable margin. The Base Rate is the greater of the Prime Rate, the Federal Funds Rate plus 50 basis points, or LIBOR plus 100 basis points. The applicable margin is based on a sliding scale which ranges from zero to 100 basis points for Base Rate loans and 100 basis points to 200 basis points for LIBOR loans.      
Maturity period   Sep. 30, 2019      
Covenant description   Under the Credit Agreement, there are various restrictive covenants, including three financial covenants which limit the consolidated total leverage ratio, or leverage ratio, the consolidated interest coverage ratio, or interest coverage ratio, and a restriction which places a limit on the amount of capital expenditures that may be made in any fiscal year. The leverage ratio is the ratio of debt as of the measurement date to earnings before interest, taxes, depreciation and amortization, or EBITDA, for the four consecutive quarters ending with the quarter of measurement. The leverage ratio must not exceed 2.50 to 1.0 during the first two years of the agreement, and 2.0 to 1.0 during the last three years of the agreement. The interest coverage ratio is EBITDA to interest expense for the four consecutive quarters ending with the quarter of measurement. The interest coverage ratio must not be less than 3.50 to 1.0 during the term of the Credit Agreement. As of March 31, 2017, we were in compliance with the restrictive covenants.      
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Interest rates on borrowings   1.85%      
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Interest rates on borrowings   2.86%      
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Federal Funds Effective Swap Rate [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate   0.50%      
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate   1.00%      
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate   1.00%      
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate   2.00%      
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Base Rate [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate   0.00%      
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Base Rate [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate   1.00%      
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Subsequent Event [Member]          
Debt Instrument [Line Items]          
Covenant description The Incremental Amendment increased the maximum permitted leverage ratio during the last three years of the agreement from 2.0:1.0 to 2.50:1.00, with a further increase to 3.00:1.00 for the first four fiscal quarters ending after any acquisition having an aggregate consideration exceeding $150,000,000 and stepping down to 2.75:1.00 thereafter, and modified the negative covenants to permit up to $50,000,000 per fiscal quarter of accounts receivable financings.        
Maximum leverage ratio permitted 250.00%        
Minimum acquisition consideration under credit agreement $ 150,000,000        
Maximum accounts receivable financings per quarter $ 50,000,000        
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Subsequent Event [Member] | Last Three Years of Agreement [Member]          
Debt Instrument [Line Items]          
Maximum leverage ratio permitted 200.00%        
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Subsequent Event [Member] | For The First Four Fiscal Quarters Ending After Any Acquisition [Member]          
Debt Instrument [Line Items]          
Maximum leverage ratio permitted 300.00%        
Credit Agreement [Member] | Revolving Credit and Term Loan Facility [Member] | Subsequent Event [Member] | Thereafter [Member]          
Debt Instrument [Line Items]          
Maximum leverage ratio permitted 275.00%        
Credit Agreement and Related Amendments [Member] | Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Amount borrowed under revolving credit facility   $ 223,800,000