Accounts Payable and Accrued Expenses (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 2012

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

Accounts payable and accrued expenses consisted of the following:

	March 31,		December 31,
	2013		2012
Trade payables	$	2,342,090	$	1,434,166
Accrued compensation and benefits		697,849		833,141
Accrued professional fees		135,026		156,205
Accrued interest		64,125		750
Other payables		251,087		388,109
	$	3,490,177	$	2,812,371

Note 12 — Accounts payable and accrued expenses

Accounts payable and accrued expenses consisted of the following:

	December 31, 2012		December 31, 2011
Trade payables	$	1,434,166	$	1,175,023
Accrued compensation and benefits		833,141		227,323
Accrued professional fees		156,205		194,658
Accrued interest		750		86,100
Other payables		388,109		166,029
	$	2,812,371	$	1,849,133