XML 60 R48.htm IDEA: XBRL DOCUMENT v3.19.1
Long-Term Debt - Long-Term Debt Instrument (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 11, 2019
Dec. 31, 2018
Sep. 18, 2014
Debt Instrument [Line Items]        
Document Period End Date Mar. 31, 2019      
Total current portion of long-term debt $ 55,000   $ 50,000  
Total notes 848,583   499,101  
Long-term credit agreements 601,250   965,000  
Debt Issuance Costs, Gross (9,835)   (7,111)  
Total long-term debt 1,439,998   1,456,990  
Current portion of long-term debt 55,000   50,000  
Total debt 1,494,998   1,506,990  
Notes Payable, Current 15,000   15,000  
4.200% senior notes, semi-annual interest payments, net of the unamortized discount, balloon due 2024        
Debt Instrument [Line Items]        
Total notes 499,140   499,101  
Four Point Five Zero Zero Percent Senior Notes Due Two Thousand Twenty Nine [Member]        
Debt Instrument [Line Items]        
Total notes 350,000 $ 350,000    
5-year term-loan facility, periodic interest and principal payments, LIBOR plus up to 1.750%, expires June 28, 2022        
Debt Instrument [Line Items]        
Current portion of loan facility 40,000   35,000  
Long-term credit agreements 320,000   330,000  
5-year revolving-loan facility, periodic interest payments, LIBOR plus up to 1.500%, plus commitment fees up to 0.250%, expires June 28, 2022        
Debt Instrument [Line Items]        
Long-term credit agreements 0   350,000  
Revolving Credit Loan Expires In Two Thousand Sixteen [Member]        
Debt Instrument [Line Items]        
Long-term credit agreements $ 281,250   $ 285,000  
Minimum [Member]        
Debt Instrument [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 1.00%      
Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Long-term credit agreements       $ 475,000