Stock incentive plan and stock-based compensation (Tables)

3 Months Ended

Mar. 31, 2014

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 March 31, 2014, is presented below:

	Number of shares	Weighted average grant date fair value
Non–vested at December 31, 2013	52,667	$	5.20
Granted	46,000		2.58
Vested	(2,000)		3.68
Forfeited	–		–
Non–vested at March 31, 2014	96,667	$	3.64

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

The Company recorded the following amounts related to stock–based compensation expense in the accompanying Consolidated Statements of Operations and Comprehensive (Loss) / Income:

	Three months ended March 31,
	2014		2013
Selling, general and administrative	$	123	$	359
Research and development		–		–
	$	123	$	359

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

The following table summarizes information about warrants outstanding at March 31, 2014:

	Number of warrants	Weighted average exercise price
Warrants outstanding at December 31, 2013	920,825	$	3.46
Issued	–		–
Exercised	–		–
Expired	–		–
Warrants outstanding at March 31,2014	920,825	$	3.46