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Note 9 - Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

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

		*March 31, 2020*
*(In thousands)*		*Balance*				*Level 1*				*Level 2*				*Level 3*
Assets
Cash and cash equivalents		$	831,246			$	831,246			$	—			$	—
Restricted cash			18,529				18,529				—				—
Investment available for sale			17,745				—				—				17,745

Liabilities
Contingent payments		$	1,520			$	—			$	—			$	1,520

		*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]

		*Three Months Ended*
		*March 31, 2020*								*March 31, 2019*
		*Assets*				*Liability*				*Assets*				*Liability*
*(In thousands)*		*Investment Available for Sale*				*Contingent Payments*				*Investment Available for Sale*				*Contingent Payments*
Balance at beginning of reporting period		$	16,151			$	(1,712	)		$	15,772			$	(2,407	)
Total gains (losses) (realized or unrealized):
Included in interest income (expense)			40				(26	)			37				(39	)
Included in other comprehensive income (loss)			1,554				—				643				—
Included in other items, net			—				(17	)			—				(66	)
Purchases, sales, issuances and settlements:
Settlements			—				235				—				232
Balance at end of reporting period		$	17,745			$	(1,520	)		$	16,452			$	(2,280	)

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

		*March 31, 2020*
*(In thousands)*		*Outstanding Face Amount*				*Carrying Value*				*Estimated Fair Value*			*Fair Value Hierarchy*
Liabilities
Obligation under assessment arrangements		$	27,588			$	22,931			$	28,120		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]

		*March 31, 2020*
*(In thousands)*		*Outstanding Face Amount*				*Carrying Value*				*Estimated Fair Value*			*Fair Value Hierarchy*
Bank credit facility		$	1,932,560			$	1,918,807			$	1,809,138		Level 2
6.375% senior notes due 2026			750,000				742,060				648,750		Level 1
6.000% senior notes due 2026			700,000				691,105				602,000		Level 1
4.750% senior notes due 2027			1,000,000				984,903				825,000		Level 1
Other			58,222				58,222				58,222		Level 3
Total debt		$	4,440,782			$	4,395,097			$	3,943,110

		*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