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Note 4 - Long-term Debt (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Feb. 19, 2021
Jan. 02, 2019
Interest Paid, Excluding Capitalized Interest, Operating Activities $ 32,000 $ 39,000    
Interest Costs Capitalized $ 0 $ 0    
2026 Notes [Member]        
Debt Instrument, Interest Rate, Stated Percentage 5.875%      
2027 Notes [Member]        
Debt Instrument, Interest Rate, Stated Percentage 7.00%      
2030 Notes [Member]        
Debt Instrument, Interest Rate, Stated Percentage 4.75%      
The Amended 2019 Senior Credit Facility [Member]        
Debt Instrument, Commitments $ 2,100,000      
The Amended 2019 Senior Credit Facility [Member] | The 2017 Term Loan [Member]        
Debt Instrument, Commitments 595,000      
The Amended 2019 Senior Credit Facility [Member] | The 2019 Term Loan [Member]        
Debt Instrument, Commitments 1,200,000      
The Amended 2019 Senior Credit Facility [Member] | Revolving Credit Facility [Member]        
Line of Credit Facility, Maximum Borrowing Capacity     $ 300,000 $ 200,000
Debt Instrument, Commitments $ 299,000      
The 2019 Senior Credit Facility [Member] | The 2019 Term Loan [Member]        
Debt Instrument, Interest Rate, Effective Percentage 2.60%      
The 2017 Senior Credit Facility [Member] | The 2017 Term Loan [Member]        
Debt Instrument, Interest Rate, Effective Percentage 2.40%