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Note 12 - Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

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

		*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

Liabilities
Contingent payments		$	924			$	—			$	—			$	924

		*December 31, 2019*
*(In thousands)*		*Balance*				*Level 1*				*Level 2*				*Level 3*
Assets
Cash and cash equivalents		$	249,977			$	249,977			$	—			$	—
Restricted cash			20,471				20,471				—				—
Investment available for sale			16,151				—				—				16,151

Liabilities
Contingent payments		$	1,712			$	—			$	—			$	1,712

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

		*December 31, 2020*
		*Assets*				*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	)

		*December 31, 2019*
		*Assets*				*Liability*
*(In thousands)*		*Investment Available for Sale*				*Contingent Payments*
Balance at beginning of reporting period		$	15,772			$	(2,407	)
Total gains (losses) (realized or unrealized):
Included in interest income (expense)			150				(140	)
Included in other comprehensive income (loss)			739				—
Included in other items, net			—				(42	)
Purchases, sales, issuances and settlements:
Settlements			(510	)			877
Balance at end of reporting period		$	16,151			$	(1,712	)

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

		*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

		*December 31, 2019*
*(In thousands)*		*Outstanding Face Amount*				*Carrying Value*				*Estimated Fair Value*			*Fair Value Hierarchy*
Liabilities
Obligation under assessment arrangements		$	28,118			$	23,300			$	28,780		Level 3

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

		*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

		*December 31, 2019*
*(In thousands)*		*Outstanding Face Amount*				*Carrying Value*				*Estimated Fair Value*			*Fair Value Hierarchy*
Bank credit facility		$	1,305,634			$	1,290,708			$	1,308,846		Level 2
6.375% senior notes due 2026			750,000				741,729				806,250		Level 1
6.000% senior notes due 2026			700,000				690,756				750,750		Level 1
4.750% senior notes due 2027			1,000,000				984,416				1,038,750		Level 1
Other			58,322				58,322				58,322		Level 3
Total debt		$	3,813,956			$	3,765,931			$	3,962,918