Stock incentive plan and share-based compensation (Tables)

3 Months Ended

Mar. 31, 2013

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 restricted stock as of March 31, 2013 is presented below:

	Number of shares			Weighted average grant  date fair value
Non-vested at December 31, 2012		314,667		$	5.20
Granted		-			-
Vested		(7,000	)		6.04
Forfeited		–			–
Non-vested at March 31, 2013		307,667		$	5.18

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

The Company has recorded the following amounts related to its share-based compensation expense in the accompanying Condensed Consolidated Statements of Operations and Comprehensive Loss:

	Three months ended March 31,
	2013		2012
Selling, general and administrative	$	359	$	25
Research and development		-		7
Total	$	359	$	32

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

The following table summarizes information about warrants outstanding at March 31, 2013:

	Number of shares		Weighted average    exercise price
Warrants outstanding at December 31, 2012		4,038,753	$	3.68
Issued		–		–
Exercised		–		–
Expired		–		–
Warrants outstanding at March 31, 2013		4,038,753	$	3.68