Stock incentive plan and stock-based compensation (Tables)

6 Months Ended

Jun. 30, 2015

Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

A summary of the Company’s employee’s restricted stock as of June 30, 2015, is presented below:

	Number of shares		Weighted average grant date fair value
Non–vested at January 1, 2015		110,000	$	1.42
Granted		55,000		0.56
Vested		(59,500)		1.07
Forfeited		(28,000)		1.99
Non–vested at June 30, 2015		77,500	$	0.87