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Note 15 - Share-based Payments (Tables)

9 Months Ended

Sep. 30, 2019

Notes Tables

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

		Three months ended September 30, 2019								Three months ended September 30, 2018
		Number of Shares				Weighted average exercise price per share				Number of Shares				Weighted average exercise price per share
Outstanding, beginning of period			774,915			$	48.63				734,196			$	42.39
Granted			36,500				54.41				23,800				57.78
Exercised			(12,260	)			15.60				(15,782	)			8.00
Forfeited			(7,014	)			60.87				(8,635	)			59.20
Expired			(12,875	)			44.98				-				-
Outstanding, end of period			779,266			$	49.37				733,579			$	43.43
Options exercisable, end of period			368,664			$	39.43				326,887			$	29.00

		Nine months ended September 30, 2019								Nine months ended September 30, 2018
		Number of Shares				Weighted average exercise price per share				Number of Shares					Weighted average exercise price per share
Outstanding, beginning of period			702,337			$	43.80				653,571			$	36.69
Granted			180,800				60.56				163,366				62.80
Exercised			(66,619	)			18.65				(44,498	)			9.49
Forfeited			(22,315	)			58.59				(38,860	)			50.46
Expired			(14,937	)			46.45				-				-
Outstanding, end of period			779,266			$	49.37				733,579			$	43.43
Options exercisable, end of period			368,664			$	39.43				326,887			$	29.00

Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

				Options outstanding												Options exercisable
Exercise Price				Number outstanding				Weighted average exercise price per share				Aggregate intrinsic value				Number outstanding				Weighted average exercise price per share				Weighted average remaining contractual life (years)				Aggregate intrinsic value
$5.52	-	$8.56			32,535			$	7.48			$	1,519				32,535			$	7.48				0.5			$	1,519
$10.16	-	$19.95			74,465				16.42				2,811				73,215				16.36				2.0				2,768
$21.10	-	$27.53			58,750				23.73				1,788				48,750				24.27				2.1				1,457
$35.25	-	$37.35			14,375				35.89				263				11,875				36.02				3.5				215
$43.15	-	$47.00			5,000				47.00				36				2,500				47.00				4.5				18
$53.20	-	$58.65			344,053				55.53				30				171,877				55.72				4.7				18
$62.12	-	$64.10			250,088				62.99				-				27,912				64.10				5.7				-
					779,266			$	49.37			$	6,447				368,664			$	39.43				3.4			$	5,995

X

- Definition

Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

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