Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Taxes [Abstract]

Schedule of Income Tax Provision (Benefit)

The actual income tax provision differs from the expected income tax provision computed at the federal statutory rate as follows:

	December 31,
	2012			2011			2010
Statutory federal tax benefit	$	(1,604,648	)	$	(1,291,175	)	$	(11,848,754	)
State income tax, net of federal benefit		(19,918	)		(232,489	)		(1,284,265	)
Other permanent differences		4,975			22,101			607,981
Foreign rate differential		(80,292	)		(50,173	)		2,492,478
Rate change		388,656			-			-
Lobbying costs		122,204			-			-
Write-off of expired/forfeited options and conversion of notes		193,605			391,826			3,071,189
Canada transfer pricing and expiring attributes		-			(8,965,832	)		-
Expiration (reversal of expiration) of net operating losses		-			(4,745,271	)		5,053,927
Other		1,393,366			732,322			309,840
Subtotal		397,948			(14,138,691	)		(1,597,604	)
Decrease (increase) in valuation allowance		(202,451	)		14,138,691			1,597,604
Income tax expense	$	195,497		$	-		$	-

Schedule of Deferred Tax Assets and Liabilities

Our net deferred tax assets consisted of the following:

	December 31,
	2012			2011
Net operating loss carry forwards	$	58,334,073		$	62,873,360
Fixed assets/intangibles		114,826			49,389
Research and development credits/loss carry forwards		3,278,995			3,291,651
Stock based compensation		3,047,573			2,611,770
Accrued expenses and other		2,789,776			1,368,036
Total deferred tax assets		67,565,243			70,194,206
Deferred tax liabilities:
Intercompany bad debt		(3,978,944	)		(6,209,959	)
Total deferred tax liabilities		(3,978,944	)		(6,209,959	)
Net deferred tax assets		63,586,299			63,984,247
Less: valuation allowance		(63,781,796	)		(63,984,247	)
Net deferred tax assets	$	(195,497	)	$	-