Note 13 - Share-based Compensation (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

						Weighted-
						average
				Weighted-		remaining		Aggregate
	Number			average		contractual		intrinsic
	of shares			exercise		term		value
	(in thousands)			price		(in years)		(in thousands)
Options outstanding as of December 31, 2021		11,904		$	22.31
Exercised		(941	)		18.60
Forfeited and expired		(109	)		17.82
Options outstanding as of March 31, 2022		10,854			22.68		6.60	$	154,501
Options expected to vest as of March 31, 2022		10,802			22.69		6.60		153,600
Options exercisable as of March 31, 2022		5,594			21.68		5.50		85,179

Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

				Weighted
	Number			average
	of shares			grant-date
	(in thousands)			fair value
Non-vested shares and share units at December 31, 2021		10,594		$	25.83
Granted		117			42.48
Vested		(180	)		30.99
Forfeited		(71	)		22.47
Non-vested shares and share units at March 31, 2022		10,460		$	25.95

Share-Based Payment Arrangement, Performance Shares, Activity [Table Text Block]

				Weighted
	Number			average
	of shares			grant-date
	(in thousands)			fair value
Non-vested share units at December 31, 2021		3,684		$	34.17
Granted		1,215			42.74
Vested		(48	)		38.72
Performance adjustments		367			34.46
Forfeited		(27	)		41.26
Non-vested share units at March 31, 2022		5,191		$	36.11