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Long-Term Debt (Tables)
 3 Months Ended
Mar. 31, 2024
Debt Disclosure [Abstract]  
Summary of Long Term Debt
Long-term debt consisted of the following at March 31, 2024 and December 31, 2023 (in thousands):
March 31, 2024December 31, 2023
3.95% Senior Notes Due 2028
$482,505 $482,505 
5.15% Senior Notes Due 2029
344,895 344,895 
7.15% Senior Notes Due 2033
400,000 400,000 
Equipment Loans Due 202514,661 18,686 
1,242,061 1,246,086 
Less deferred financing costs and discounts(8,597)(8,919)
Less current portion(12,406)(12,226)
Total$1,221,058 $1,224,941 
Schedule of Principal Repayment Requirements of Long Term Debt
Presented below is a schedule of the principal repayment requirements of long-term debt by fiscal year as of March 31, 2024 (in thousands):
Year ending December 31,
2024$8,265 
20256,396 
2026— 
2027— 
2028482,505 
2029344,895 
Thereafter400,000 
Total$1,242,061