Earnings per Share (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Earnings per share

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2017		2016		2017		2016
Numerator:
Net income available to common stockholders for basic and diluted net income per common share	$	202,109	$	174,965	$	409,182	$	347,405
Denominator:
Weighted average common shares outstanding for basic net income per common share	4,652,426		4,938,820		4,681,223		5,002,070
Weighted average impact of dilutive equity instruments	83,166		49,427		78,518		47,501
Weighted average shares for diluted net income per common share	4,735,592		4,988,247		4,759,741		5,049,571
Net income per common share:
Basic	$	0.04	$	0.04	$	0.09	$	0.07
Diluted	$	0.04	$	0.04	$	0.09	$	0.07