Note 6 - Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Numerator:
Net income	$	68,770	$	55,566	$	169,352	$	121,488
Denominator:
Weighted-average outstanding shares - basic		45,970		44,970		45,754		44,737
Effect of dilutive securities		1,882		1,985		2,018		2,082
Weighted-average outstanding shares - diluted		47,852		46,955		47,772		46,819
Net income per share:
Basic	$	1.50	$	1.24	$	3.70	$	2.72
Diluted	$	1.44	$	1.18	$	3.55	$	2.59