Note 7 - Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2017

Notes Tables

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
Net income	$	811,728	$	583,629	$	952,077	$	1,075,138
Weighted-average shares outstanding:
Basic		3,256,303		3,402,828		3,256,303		3,402,828
Diluted		3,265,521		3,406,468		3,265,032		3,403,904
Earnings per share:
Basic	$	0.25	$	0.17	$	0.29	$	0.32
Diluted	$	0.25	$	0.17	$	0.29	$	0.32