Fair Value Measurements (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 2012

Fair Value Disclosures [Abstract]

Fair Value Inputs Liability Quantitative Information [Table Text Block]

The carrying amounts of the liabilities measured at fair value are as follows:

Description	Level 1		Level 2		Level 3		Total
Liabilities at March 31, 2013:
Embedded conversion options	$	—	$	—	$	591,078	$	591,078
Total measured at fair value	$	—	$	—	$	591,078	$	591,078
Liabilities at December 31, 2012:
Embedded conversion options	$	—	$	—	$	780,960	$	780,960
Total measured at fair value	$	—	$	—	$	780,960	$	780,960

The carrying amounts of the derivative liabilities are as follows:

Description	Level 1		Level 2		Level 3		Total
Liabilities at December 31, 2012:
Embedded conversion options	$	—	$	—	$	780,960	$	780,960
Total measured at fair value	$	—	$	—	$	780,960	$	780,960
Liabilities at December 31, 2011:
Embedded conversion options	$	—	$	—	$	1,823,207	$	1,823,207
Total measured at fair value	$	—	$	—	$	1,823,207	$	1,823,207
Liabilities at December 31, 2010:
Embedded conversion options	$	—	$	—	$	1,812,447	$	1,812,447
Total measured at fair value	$	—	$	—	$	1,812,447	$	1,812,447

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

The following table sets forth a summary of changes in the fair value of Level 3 liabilities for the three months ended March 31, 2013:

Balance at December 31, 2012		Established in 2012		Modification of Convertible Debt Agreement		Conversion to Common Stock			Change in Fair Value			Effect of Extinguishment of Debt			Balance at March 31, 2013
$	780,960	$	—	$	250,361	$	(68,994	)	$	(193,093	)	$	(178,156	)	$	591,078

The following tables set forth a summary of changes in the fair value of Level 3 liabilities for the year ended December 31, 2012 and 2011:

Description	Balance at  December 31,  2011		Established in 2012		Conversion to  Common Stock			Change in Fair Value			Reclass to Equity			Balance at  December 31, 2012
Derivative liabilities:
Embedded conversion options	$	1,823,207	$	—	$	(549,936	)	$	(492,311	)	$	—		$	780,960
Contingent consideration	$	—	$	11,109,020	$	—		$	4,334,932		$	(15,443,952	)	$	—

Description	Balance at  December 31, 2010		Established in  2011		Modification of  Warrant Agreements			Conversion to  Common Stock			Change in Fair Value			Balance at  December 31, 2011
Derivative liabilities:
Stock purchase warrants	$	1,812,447	$	—	$	(1,434,322	)	$	—		$	(378,125	)	$	—
Embedded conversion options	$	—	$	2,085,513	$	—		$	(169,965	)	$	(92,341	)	$	1,823,207