Annual report pursuant to Section 13 and 15(d)

Long-Term Debt and Notes Payable - Summary of Long-Term Debt (Detail)

v3.6.0.2
Long-Term Debt and Notes Payable - Summary of Long-Term Debt (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Debt Instrument    
Capital lease obligations $ 10,850 $ 12,826
Long-term debt and capital lease obligations 148,120 169,789
Less current maturities 2,636 2,579
Long-term debt and capital lease obligations excluding current maturities $ 145,484 167,210
Line of Credit | Revolving Credit Facility | LIBOR    
Debt Instrument    
Effective interest rate 2.27%  
Line of Credit | Revolving Credit Facility | LIBOR | Minimum    
Debt Instrument    
Interest rate on revolving credit at LIBOR rate 1.375%  
Line of Credit | Revolving Credit Facility | LIBOR | Maximum    
Debt Instrument    
Interest rate on revolving credit at LIBOR rate 2.25%  
Line of Credit | Revolving Credit Facility | Fourth Amended and Restated Credit Agreement    
Debt Instrument    
Long-term debt $ 136,000 155,000
Line of Credit | Revolving Credit Facility | Fourth Amended and Restated Credit Agreement | LIBOR | Minimum    
Debt Instrument    
Interest rate on revolving credit at LIBOR rate 1.375%  
Line of Credit | Revolving Credit Facility | Fourth Amended and Restated Credit Agreement | LIBOR | Maximum    
Debt Instrument    
Interest rate on revolving credit at LIBOR rate 2.25%  
Other Bank Debt    
Debt Instrument    
Long-term debt $ 1,270 $ 1,963