Note 8 - Fair Value Measurements (Tables)
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9 Months Ended |
Sep. 30, 2026 |
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| Notes Tables |
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| Fair Value, by Balance Sheet Grouping [Table Text Block] |
| | September 30, 2026 | |
(In thousands) | | Balance | | | Level 1 | | | Level 2 | | | Level 3 | |
Assets | | | | | | | | | | | | | | | | |
Cash and cash equivalents | | $ | 297,182 | | | $ | 297,182 | | | $ | — | | | $ | — | |
Restricted cash | | | 6,882 | | | | 6,882 | | | | — | | | | — | |
Investment available for sale | | | 11,546 | | | | — | | | | — | | | | 11,546 | |
| | December 31, 2025 | |
(In thousands) | | Balance | | | Level 1 | | | Level 2 | | | Level 3 | |
Assets | | | | | | | | | | | | | | | | |
Cash and cash equivalents | | $ | 353,413 | | | $ | 353,413 | | | $ | — | | | $ | — | |
Restricted cash | | | 5,354 | | | | 5,354 | | | | — | | | | — | |
Investment available for sale | | | 12,347 | | | | — | | | | — | | | | 12,347 | |
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| Fair Value Asset (Liability) Measured On Recurring Basis Unobservable Input Reconciliation [Table Text Block] |
| | Three Months Ended | | | Nine Months Ended | |
| | September 30, | | | September 30, | |
(In thousands) | | 2026 | | | 2025 | | | 2026 | | | 2025 | |
Balance at beginning of reporting period | | $ | 11,574 | | | $ | 12,123 | | | $ | 12,347 | | | $ | 12,553 | |
Total gains (realized or unrealized): | | | | | | | | | | | | | | | | |
Included in interest income | | | 44 | | | | 44 | | | | 136 | | | | 134 | |
Included in other comprehensive income (loss) | | | (72 | ) | | | 387 | | | | (92 | ) | | | 652 | |
Purchases, sales, issuances and settlements: | | | | | | | | | | | | | | | | |
Settlements | | | — | | | | — | | | | (845 | ) | | | (785 | ) |
Balance at end of reporting period | | $ | 11,546 | | | $ | 12,554 | | | $ | 11,546 | | | $ | 12,554 | |
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| Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block] |
| | September 30, 2026 |
| | Outstanding | | | Carrying | | | Estimated | | Fair Value |
(In thousands) | | Face Amount | | | Value | | | Fair Value | | Hierarchy |
Asset | | | | | | | | | | | | | |
Note receivable | | $ | 37,417 | | | $ | 37,417 | | | $ | 37,184 | | Level 3 |
Liabilities | | | | | | | | | | | | | |
Obligation under assessment arrangements | | | 13,888 | | | | 12,607 | | | | 16,100 | | Level 3 |
| | December 31, 2025 |
| | Outstanding | | | Carrying | | | Estimated | | Fair Value |
(In thousands) | | Face Amount | | | Value | | | Fair Value | | Hierarchy |
Asset | | | | | | | | | | | | | |
Note receivable | | $ | 34,789 | | | $ | 34,789 | | | $ | 35,641 | | Level 3 |
Liabilities | | | | | | | | | | | | | |
Obligation under assessment arrangements | | | 15,737 | | | | 14,200 | | | | 17,915 | | Level 3 |
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| Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] |
| | September 30, 2026 |
| | Outstanding | | | Carrying | | | Estimated | | Fair Value |
(In thousands) | | Face Amount | | | Value | | | Fair Value | | Hierarchy |
Credit facility | | $ | 800,900 | | | $ | 783,945 | | | $ | 792,400 | | Level 2 |
4.750% senior notes due 2027 | | | 1,000,000 | | | | 997,565 | | | | 990,000 | | Level 1 |
4.750% senior notes due 2031 | | | 900,000 | | | | 893,596 | | | | 835,875 | | Level 1 |
Total debt | | $ | 2,700,900 | | | $ | 2,675,106 | | | $ | 2,618,275 | | |
| | December 31, 2025 |
| | Outstanding | | | Carrying | | | Estimated | | Fair Value |
(In thousands) | | Face Amount | | | Value | | | Fair Value | | Hierarchy |
Prior credit facility | | $ | 160,700 | | | $ | 156,880 | | | $ | 160,700 | | Level 2 |
4.750% senior notes due 2027 | | | 1,000,000 | | | | 996,104 | | | | 996,250 | | Level 1 |
4.750% senior notes due 2031 | | | 900,000 | | | | 892,585 | | | | 877,500 | | Level 1 |
Total debt | | $ | 2,060,700 | | | $ | 2,045,569 | | | $ | 2,034,450 | | |
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