Warrants (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Share-based Compensation, Warrants Activity [Table Text Block]

	Shares	Weighted Average Exercise Price	Range of Exercise Prices
Outstanding at December 31, 2012	923,090	$ 7.77	$2.09 - $48.90
Warrants issued	─
Warrants expired/forfeited	─
Outstanding at March 31, 2013	923,090	$ 7.77	$2.09 - $48.90
Warrants exercisable at March 31, 2013	863,090	$ 7.92	$2.09 - $48.90

Schedule of Reconciliation, Warrants Liability [Table Text Block]

	Three Months Ended March 31,
	2013	2012
Balance at beginning of period	$ 10	$    100
Remeasurement of common stock warrants	(3)	141
Balance at end of period	$   7	$    241