Annual report pursuant to Section 13 and 15(d)

Long-Term Debt and Notes Payable (Detail)

v3.3.1.900
Long-Term Debt and Notes Payable (Detail)
12 Months Ended
Feb. 28, 2014
USD ($)
Jul. 18, 2013
USD ($)
Mar. 27, 2013
USD ($)
Dec. 31, 2015
USD ($)
fiscal_quarter
Dec. 31, 2014
USD ($)
Sep. 26, 2014
USD ($)
Debt Instrument            
Leverage ratio increase, duration of permitted following acquisition (in fiscal quarters) | fiscal_quarter       2    
Actual interest coverage ratio at end of period       34.9    
Actual leverage ratio at end of period       1.3    
Amended And Restated Credit Agreement            
Debt Instrument            
Permitted leverage ratio       3.5    
Minimum interest coverage ratio       3.0    
Amended And Restated Credit Agreement | Maximum            
Debt Instrument            
Permitted leverage ratio       4.0    
Line of Credit | Revolving Credit Facility | LIBOR            
Debt Instrument            
Interest rate on revolving credit at LIBOR rate       1.80%    
Line of Credit | Revolving Credit Facility | LIBOR | Minimum            
Debt Instrument            
Interest rate on revolving credit at LIBOR rate     1.50% 1.375% 1.375%  
Line of Credit | Revolving Credit Facility | LIBOR | Maximum            
Debt Instrument            
Interest rate on revolving credit at LIBOR rate     2.50% 2.25% 2.25%  
Line of Credit | Original Facility | Revolving Credit Facility            
Debt Instrument            
Revolving credit line           $ 6,000,000
Line of Credit | Amended And Restated Credit Agreement | Revolving Credit Facility | Maximum            
Debt Instrument            
Revolving line of credit     $ 35,000,000      
Line of Credit | Second Amended and Restated Credit Agreement | Revolving Credit Facility | Maximum            
Debt Instrument            
Revolving line of credit     $ 75,000,000      
Line of Credit | Third Amended and Restated Credit Agreement | Minimum            
Debt Instrument            
Commitment fee (percentage)   0.25%        
Line of Credit | Third Amended and Restated Credit Agreement | Maximum            
Debt Instrument            
Commitment fee (percentage)   0.50%        
Line of Credit | Third Amended and Restated Credit Agreement | Revolving Credit Facility            
Debt Instrument            
Revolving credit line $ 58,000,000 $ 75,000,000        
Debt instrument term (in years)   5 years        
Line of credit facility maximum borrowings $ 125,000,000          
Line of credit extension period 5 years          
Line of Credit | Third Amended and Restated Credit Agreement | Revolving Credit Facility | Minimum            
Debt Instrument            
Commitment fee (percentage) 0.25%          
Line of Credit | Third Amended and Restated Credit Agreement | Revolving Credit Facility | Maximum            
Debt Instrument            
Commitment fee (percentage) 0.50%          
Line of Credit | Third Amended and Restated Credit Agreement | Revolving Credit Facility | LIBOR | Minimum            
Debt Instrument            
Interest rate on revolving credit at LIBOR rate   2.25%        
Line of Credit | Third Amended and Restated Credit Agreement | Revolving Credit Facility | LIBOR | Maximum            
Debt Instrument            
Interest rate on revolving credit at LIBOR rate   3.50%        
Line of Credit | Fourth Amended and Restated Credit Agreement | Revolving Credit Facility            
Debt Instrument            
Term loan       $ 155,000,000 $ 165,000,000  
Revolving line of credit           350,000,000
Optional increase in maximum borrowing capacity           150,000,000
Line of Credit | Fourth Amended and Restated Credit Agreement | Revolving Credit Facility | Minimum            
Debt Instrument            
Commitment fee (percentage)       0.175%    
Line of Credit | Fourth Amended and Restated Credit Agreement | Revolving Credit Facility | Maximum            
Debt Instrument            
Commitment fee (percentage)       0.35%    
Line of Credit | Fourth Amended and Restated Credit Agreement | Revolving Credit Facility | LIBOR | Minimum            
Debt Instrument            
Interest rate on revolving credit at LIBOR rate       1.375%    
Line of Credit | Fourth Amended and Restated Credit Agreement | Revolving Credit Facility | LIBOR | Maximum            
Debt Instrument            
Interest rate on revolving credit at LIBOR rate       2.25%    
Line of Credit | Fourth Amended and Restated Credit Agreement | Letter of Credit            
Debt Instrument            
Credit facility allocation           20,000,000
Outstanding letters of credit       $ 1,100,000    
Term Loan | Original Facility            
Debt Instrument            
Term loans outstanding           $ 180,500,000
Term Loan | Third Amended and Restated Credit Agreement            
Debt Instrument            
Debt instrument term (in years)   5 years        
Term loan   $ 190,000,000