Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2013

Stockholders Equity Note [Abstract]

Schedule of changes in stockholder's equity

										Accumulated
										Other								Total
	Common Stock						Additional		Comprehensive			Treasury Stock				Accumulated		Stockholders'
		Shares			Amount		Paid-in Capital			Income (Loss)		Shares	Amount			Deficit		Equity
December 31, 2012		38,404,764			$	384,048	$	801,840,491		$	1,004,412	165,906		$	(1,552,382)	$	(786,646,266)	$	15,030,303
Net loss				-	-		-			-		-		-		(17,897,143)		(17,897,143)
Other comprehensive loss				-	-		-			(82,096)		-		-		-		(82,096)
Stock based compensation			1,530,883		15,309		983,814			-		-		-		-		999,123
Public Offering, common stock, net (1)		21,711,800			217,118		(354,586)			-		-		-		-		(137,468)
Exercise of warrants (2)		18,996,400			189,964		8,861,846			-		-		-		-		9,051,810
Stock dividend			39,324		393		16,910									(17,303)		-
June 30, 2013		80,683,171			$	806,832	$	811,348,475		$	922,316	165,906		$	(1,552,382)	$	(804,560,712)	$	6,964,529

(1)

As discussed further below, the Company offered common stock and warrants in connection with its 2013 public offerings. The associated warrants have been separately valued and classified as a liability on the accompanying consolidated balance sheet. After consideration of the fair value ascribed to the warrants and the net proceeds of the overall offering, it was determined that the fair value of the warrants and the common stock exceeded the net proceeds received as part of the offering and consequently additional paid-in capital was reduced by $354,586.

(2)

Pursuant to the exercise of warrants, additional paid-in capital was increased by $2,659,496 from the issuance of 18,996,400 shares of common stock. Additionally, paid-in capital was increased by $6,202,350 and warrant liability was reduced by $6,202,350 (the fair value of the warrants on the exercise date).