Note 4 - Net Income Per Common Share (Tables)

9 Months Ended

Sep. 30, 2018

Notes Tables

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Weighted average number of common shares outstanding - basic		3,388,624		3,346,689		3,388,624		3,346,689
Effect of dilutive securities		66,312		98,943		49,762		98,943
Weighted average number of common shares and potential common shares - diluted		3,454,936		3,445,632		3,438,386		3,445,632
Net income	$	2,326	$	1,589	$	7,230	$	4,733
Net income per common share - basic	$	0.69	$	0.47	$	2.13	$	1.41
Net income per common share - diluted	$	0.67	$	0.46	$	2.10	$	1.37