Supplemental Cash Flow Disclosures - Non-Cash Transactions (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 2012

Details of Nonmonetary Transactions [Table Text Block]

Non-cash transactions for the three months ended March 31, 2013 include:

	2013
Conversion of convertible debt to common stock	$	75,335
Common Stock issued for committed equity financing facility		262,500
Increase in fair value of embedded conversion option upon modification of convertible debt		151,032
Warrants issued for loan modification		151,758
Warrants issued for term loan		568,324
Issuance of Common Stock and warrants for release of security interest in patents		325,693
Obligation to issue shares for professional services		17,850
Warrants issued to investors in connection with the registered direct offering		3,601,354
Warrants issued to placement agent in connection with the registered direct offering		75,981

Non-cash Investing and Financing transactions for years ended December 31 include:

	2012		2011		2010
Preferred dividends paid by issuance of stock	$	82,500	$	333,556	$	189,500
Accrued dividends on preferred stock		—		346,236		275,068
Reclassification of derivative liabilities for modified warrant agreements		—		1,434,322		—
Discharge of previously deferred financing costs for modified warrant agreements		—		136,543		—
Derivative liability for embedded conversion option		—		2,085,513		—
Conversion of convertible debt to common stock		924,904		600,000		—
Business combination:
Inventory acquired		—		—		1,151,035
Property and equipment acquired		—		—		768,000
Goodwill and intangible assets		—		—		4,089,823
Deferred charges		—		—		655,260
Note Payable for balance of acquisition		—		—		4,008,858
Issuance of Series E liability		18,955,742		—		—
Issuance of contingent consideration		11,109,020		—		—
Issuance of replacement warrants		1,883,751		—		—
Common stock issued in satisfaction of subscription receivable		2,790,107		—		—
Effect of cancellation of escrowed shares		195,132		—		—
Obligation to issue shares for professional services		30,000		—		—