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DEBT (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 27, 2014
Jun. 26, 2014
Dec. 31, 2017
Sep. 30, 2017
Feb. 13, 2012
Debt Instrument [Line Items]          
Long-term debt, prepaid debt issuance cost     $ 378 $ 441  
Current portion of long-term debt     $ 16,406 10,938  
Credit Agreement [Member] | Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Line of credit facility, borrowing capacity   $ 75,000      
Maturity date of credit facility   Feb. 13, 2017      
Credit Agreement [Member] | Term Loan [Member]          
Debt Instrument [Line Items]          
Face amount of debt   $ 157,500     $ 175,000
Amended Credit Agreement [Member]          
Debt Instrument [Line Items]          
Interest rate description     Borrowings under the amended Credit Facilities (other than in respect of swing-line loans) bear interest at a rate per annum equal to the “Applicable Rate” (as defined below) plus, at our option, either (1) a LIBOR rate determined by reference to the cost of funds for deposits in the relevant currency for the interest period relevant to such borrowing or (2) the “Base Rate”, which is the highest of (x) the prime rate of Bank of America, N.A., (y) the federal funds rate plus 1/2 of 1.00% and (z) the one-month LIBOR rate plus 1.00%. The current Applicable Rate for borrowings under the amended Credit Facilities is 1.50%, with respect to LIBOR borrowings and 0.25% with respect to Base Rate borrowings, with such Applicable Rate subject to adjustment based on our consolidated leverage ratio. Swing-line loans bear interest at the Base Rate plus the Applicable Rate for Base Rate loans under the Revolving Credit Facility.    
Covenant terms     The Credit Agreement contains covenants that restrict the ability of the Company and its subsidiaries to take certain actions, including, among other things and subject to certain significant exceptions: creating liens, incurring indebtedness, making investments, engaging in mergers, selling property, paying dividends or amending organizational documents. The Credit Agreement requires us to comply with certain financial ratio maintenance covenants. These include a maximum consolidated leverage ratio of 2.75 to 1.00 and a minimum consolidated fixed charge coverage ratio of 1.25 to 1.00 for the period January 1, 2016 through the expiration of the Credit Agreement. As of June 30, 2017, our consolidated leverage ratio was 0.97 to 1.00 and our consolidated fixed charge coverage ratio was 3.47 to 1.00. The Credit Agreement also contains customary affirmative covenants and events of default. We believe we are in compliance with these covenants.    
Amended Credit Agreement [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Consolidated fixed charge coverage ratio     1.25    
Amended Credit Agreement [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Consolidated leverage ratio     2.75    
Amended Credit Agreement [Member] | Federal Funds Rate [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate     0.50%    
Amended Credit Agreement [Member] | LIBOR [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate     1.00%    
Current applicable rate     1.50%    
Amended Credit Agreement [Member] | Base Rate [Member]          
Debt Instrument [Line Items]          
Current applicable rate     0.25%    
Amended Credit Agreement [Member] | Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Line of credit facility, borrowing capacity     $ 100,000    
Maturity date of credit facility     Jun. 27, 2019    
Interest rate description     In addition to paying interest on outstanding principal under the Credit Agreement, we pay a commitment fee to the lenders under the Revolving Credit Facility in respect of the unutilized commitments thereunder. As amended, the fee ranges from 0.20% to 0.30%, based on our consolidated leverage ratio.    
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member]          
Debt Instrument [Line Items]          
Commitment fee percentage     0.20%    
Amended Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Commitment fee percentage     0.30%    
Amended Credit Agreement [Member] | Term Loan [Member]          
Debt Instrument [Line Items]          
Increase in loan commitments $ 17,500        
Amount drawn from increase in loan commitments 17,500        
Term loan commitments outstanding $ 175,000        
Long-term debt, prepaid debt issuance cost     $ 378 $ 441  
Fair value of debt     141,094    
Current portion of long-term debt     16,406    
Long-term Debt, by Maturity [Abstract]          
Remainder of 2018     7,656    
2019     133,438    
Long Term Debt     $ 141,094