Share-based compensation (Tables)

3 Months Ended

Mar. 31, 2018

Share-Based Compensation [Abstract]

Summary of status of company's stock option plan

A summary of the activity for stock options issued under the Company’s Plans for the indicated periods is presented below:

 

Stock Option Totals	Shares		Weighted Average Exercise Price
Outstanding at December 31, 2016		3,214,398	$	2.68
-Exercised		(1,545,161)	$	2.27
-Granted		1,400,203	$	5.72
Outstanding at December 31, 2017		3,069,440	$	4.28
-Exercised		(5,000)	$	3.43
-Granted		20,000		5.81
-Cancelled		(135,592)		6.26
Outstanding at March 31, 2018		2,948,848	$	4.20

Weighted average contractual life and exercise price

The following is the weighted average contractual life in years and the weighted average exercise price at March 31, 2018 of:

			Weighted Average Remaining	Weighted Average
	Number of Options		Contractual Life	Exercise Price
Options outstanding and vested		2,840,848	2.14 years	$	4.14