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v3.25.2

Long-Term Debt - Outstanding Long-Term Debt (Detail) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Debt Instrument [Line Items] |  |
Total long-term debt | $ (1,300,000) | $ (1,300,000)
Debt Instrument, Unused Borrowing Capacity, Amount | 305,000 |
Total Long-term debt | 1,275,100 | 1,287,200
Less: current maturities | (25,500) | (25,500)
Less: debt issuance costs | 3,200 | 3,600
Total long-term debt, net of current maturities | 1,249,600 | 1,261,700
5.68% note, due June 30, 2026 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (2,900) | (5,800)
Debt Instrument, Interest Rate, Stated Percentage | 5.68% |
Debt instrument, maturity date | Jun. 30, 2026 |
6.43% note, due May 2, 2028 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (2,100) | (2,800)
Debt Instrument, Interest Rate, Stated Percentage | 6.43% |
Debt instrument, maturity date | May 02, 2028 |
3.73% note, due December 16, 2028 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (8,000) | (8,000)
Debt Instrument, Interest Rate, Stated Percentage | 3.73% |
Debt instrument, maturity date | Dec. 16, 2028 |
3.88% note, due May 15, 2029 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (20,000) | (25,000)
Debt Instrument, Interest Rate, Stated Percentage | 3.88% |
Debt instrument, maturity date | May 15, 2029 |
3.25% note, due April 30, 2032 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (49,000) | (52,500)
3.48% note, due May 31, 2038 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | (50,000) | (50,000)
Uncollateralized Senior Note Due November Two Thousand Thirty Eight [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (50,000) | (50,000)
Debt Instrument, Interest Rate, Stated Percentage | 3.58% |
Debt instrument, maturity date | Nov. 30, 2038 |
Uncollateralized Senior Note Due July Two Thousand Thirty Five |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (50,000) | (50,000)
Debt Instrument, Interest Rate, Stated Percentage | 3.00% |
Debt instrument, maturity date | Jul. 15, 2035 |
Uncollateralized Senior Note Due August Two Thousand Thirty Five |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (40,000) | (40,000)
Debt Instrument, Interest Rate, Stated Percentage | 2.96% |
Debt instrument, maturity date | Aug. 15, 2035 |
Uncollateralized Senior Note Due November Two Thousand Thirty Nine |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (100,000) | (100,000)
Equipment Security Note |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (6,300) | (6,700)
Debt Instrument, Interest Rate, Stated Percentage | 2.46% |
Debt instrument, maturity date | Sep. 24, 2031 |
Uncollateralized Senior Note Due January Two Thousand Thirty Seven |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (50,000) | (50,000)
Debt Instrument, Interest Rate, Stated Percentage | 2.49% |
Debt instrument, maturity date | Jan. 25, 2037 |
Uncollateralized Senior Note Due March 15, 2042 |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (50,000) | (50,000)
Debt Instrument, Interest Rate, Stated Percentage | 2.95% |
Debt instrument, maturity date | Mar. 15, 2042 |
Uncollateralized Senior Note Due March 14, 2038 |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (80,000) |
Debt Instrument, Interest Rate, Stated Percentage | 5.43% |
Debt instrument, maturity date | Mar. 14, 2038 |
Uncollateralized Senior Note Due March 14, 2038 [Abstract] |  |
Debt Instrument [Line Items] |  |
Total long-term debt |  | (80,000)
Uncollateralized Senior Note Due December 2026 |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (100,000) | (100,000)
Debt Instrument, Interest Rate, Stated Percentage | 6.39% |
Debt instrument, maturity date | Dec. 31, 2026 |
Uncollateralized Senior Note Due December 2027 |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (100,000) | (100,000)
Debt Instrument, Interest Rate, Stated Percentage | 6.44% |
Debt instrument, maturity date | Dec. 31, 2027 |
Uncollateralized Senior Note Due December 2028 |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (100,000) | (100,000)
Debt Instrument, Interest Rate, Stated Percentage | 6.45% |
Debt instrument, maturity date | Dec. 31, 2028 |
Uncollateralized Senior Note Due December 2030 |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (100,000) | (100,000)
Debt Instrument, Interest Rate, Stated Percentage | 6.62% |
Debt instrument, maturity date | Dec. 31, 2030 |
Uncollateralized Senior Note Due December 2033 |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (100,000) | (100,000)
Debt Instrument, Interest Rate, Stated Percentage | 6.71% |
Debt instrument, maturity date | Dec. 31, 2033 |
Uncollateralized Senior Note Due December 2038 |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (50,000) | (50,000)
Debt Instrument, Interest Rate, Stated Percentage | 6.73% |
Debt instrument, maturity date | Dec. 31, 2038 |
Term Note Due January Two Thousand Twenty [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (70,000) | (70,000)
Uncollateralized Senior Notes Due On October 2029 |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (100,000) | $ (100,000)
Debt Instrument, Interest Rate, Stated Percentage | 5.20% |
Debt instrument, maturity date | Oct. 31, 2029 |
Uncollateralized Senior Note Due MM YYYY |  |
Debt Instrument [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.04% |
Prudential [Member] | Uncollateralized Senior Note Due MM YYYY |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ (200,000) |

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