Note 6 - Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share

Schedule of computation of earnings per share on a basic and diluted basis

		Three months ended			Nine months ended
		September 30,			September 30,
		2018		2017		2018		2017
Net income	$	8,808,835	$	7,853,935	$	29,804,181	$	25,804,917
Basic EPS	$	0.56	$	0.60	$	2.06	$	1.96
Diluted EPS	$	0.55	$	0.58	$	2.02	$	1.91
Weighted average common shares outstanding		15,625,123		13,151,350		14,477,783		13,151,672
Weighted average common shares issuable upon exercise of stock options and under the employee stock purchase plan		297,201		356,605		308,994		357,894
Weighted average common and common equivalent shares outstanding		15,922,324		13,507,955		14,786,777		13,509,566