Stock incentive plan and share-based compensation (Tables)

12 Months Ended

Dec. 31, 2012

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 December 31, 2012 is presented below:

	Number of shares			Weighted average grant  date fair value
Non-vested at December 31, 2011		–		$	–
Granted		392,000			5.28
Vested		(77,333	)		5.62
Forfeited		–			–
Non-vested at December 31, 2012		314,667		$	5.20

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

The following table summarizes information about warrants outstanding at December 31, 2012:

	Number of shares		Weighted average exercise price
Warrants outstanding at December 31, 2011		–	$	–
Issued		4,038,753		3.68
Exercised		–		–
Expired		–		–
Warrants outstanding at December 31, 2012		4,038,753	$	3.68

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 Consolidated Statements of Operations and Comprehensive Loss:

	Year ended December 31,
	2012		2011
Selling, general and administrative	$	746	$	215
Research and development		7		32
Total	$	753	$	247