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Note 11 - Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Fair Value, by Balance Sheet Grouping [Table Text Block]

		*December 31, 2021*
*(In thousands)*		*Balance*				*Level 1*				*Level 2*				*Level 3*
Assets
Cash and cash equivalents		$	344,557			$	344,557			$	—			$	—
Restricted cash			12,571				12,571				—				—
Investment available for sale			15,822				—				—				15,822

Liability
Contingent payments		$	62			$	—			$	—			$	62

		*December 31, 2020*
*(In thousands)*		*Balance*				*Level 1*				*Level 2*				*Level 3*
Assets
Cash and cash equivalents		$	519,182			$	519,182			$	—			$	—
Restricted cash			15,817				15,817				—				—
Investment available for sale			16,692				—				—				16,692

Liability
Contingent payments		$	924			$	—			$	—			$	924

Fair Value Asset (Liability) Measured On Recurring Basis Unobservable Input Reconciliation [Table Text Block]

		*December 31, 2021*
		*Asset*				*Liability*
*(In thousands)*		*Investment Available for Sale*				*Contingent Payments*
Balance at beginning of reporting period		$	16,692			$	(924	)
Total gains (losses) (realized or unrealized):
Included in interest income (expense)			161				(29	)
Included in other comprehensive income (loss)			(441	)			—
Included in other items, net			—				52
Purchases, sales, issuances and settlements:
Settlements			(590	)			839
Balance at end of reporting period		$	15,822			$	(62	)

		*December 31, 2020*
		*Asset*				*Liability*
*(In thousands)*		*Investment Available for Sale*				*Contingent Payments*
Balance at beginning of reporting period		$	16,151			$	(1,712	)
Total gains (losses) (realized or unrealized):
Included in interest income (expense)			156				(82	)
Included in other comprehensive income (loss)			935				—
Included in other items, net			—				192
Purchases, sales, issuances and settlements:
Settlements			(550	)			678
Balance at end of reporting period		$	16,692			$	(924	)

Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]

		*December 31, 2021*
*(In thousands)*		*Outstanding Face Amount*				*Carrying Value*				*Estimated Fair Value*			*Fair Value Hierarchy*
Liabilities
Obligation under assessment arrangements		$	24,306			$	20,734			$	26,908		Level 3

		*December 31, 2020*
*(In thousands)*		*Outstanding Face Amount*				*Carrying Value*				*Estimated Fair Value*			*Fair Value Hierarchy*
Liabilities
Obligation under assessment arrangements		$	26,246			$	22,062			$	26,542		Level 3

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]

		*December 31, 2021*
*(In thousands)*		*Outstanding Face Amount*				*Carrying Value*				*Estimated Fair Value*			*Fair Value Hierarchy*
Bank credit facility		$	867,897			$	859,106			$	866,812		Level 2
4.750% senior notes due 2027			1,000,000				988,312				1,023,750		Level 1
8.625% senior notes due 2025			300,000				295,934				320,250		Level 1
4.750% senior notes due 2031			900,000				886,746				915,750		Level 1
Other			1,496				1,496				1,496		Level 3
Total debt		$	3,069,393			$	3,031,594			$	3,128,058

		*December 31, 2020*
*(In thousands)*		*Outstanding Face Amount*				*Carrying Value*				*Estimated Fair Value*			*Fair Value Hierarchy*
Bank credit facility		$	896,185			$	882,789			$	888,511		Level 2
6.375% senior notes due 2026			750,000				743,053				778,125		Level 1
6.000% senior notes due 2026			700,000				692,151				728,000		Level 1
4.750% senior notes due 2027			1,000,000				986,364				1,038,750		Level 1
8.625% senior notes due 2025			600,000				589,488				667,500		Level 1
Other			3,638				3,638				3,638		Level 3
Total debt		$	3,949,823			$	3,897,483			$	4,104,524