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Note 7 - Equity Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2020

Notes Tables

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

Service Period Stock Options		Shares				Weighted Average Exercise Price
Outstanding at December 31, 2019			1,359,990			$	11.50
Granted			54,782				62.84
Exercised			(240,265	)			8.45
Forfeited			(357	)			11.00
Outstanding at June 30, 2020			1,174,150			$	14.52

Performance Based Options		Shares				Weighted Average Exercise Price
Outstanding at December 31, 2019			1,372,819			$	18.31
Granted			19,317				63.87
Exercised			(3,687	)			16.45
Outstanding at June 30, 2020			1,388,449			$	18.95

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

Restricted Stock Units		Shares				Weighted-Average Grant-Date Fair Value Per Unit
Outstanding at December 31, 2019			240,229			$	29.07
Granted			53,041				63.77
Issued upon vesting			(97,620	)			24.51
Forfeited			(420	)			27.00
Outstanding at June 30, 2020			195,230			$	40.78

X

- Definition

Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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