Note 6 - Net Income Per Share (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

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

	Three Months Ended March 31,
	2021		2020
Numerator:
Net income	$	45,413	$	35,756
Denominator:
Weighted-average outstanding shares - basic		45,498		44,455
Effect of dilutive securities		2,213		2,215
Weighted-average outstanding shares - diluted		47,711		46,670
Net income per share:
Basic	$	1.00	$	0.80
Diluted	$	0.95	$	0.77