Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Taxes [Abstract]

Net deferred tax asset

The primary components of the net deferred tax asset are as follows at December 31, 2012 and 2011 (in thousands):

	December 31,
	2012			2011
Deferred tax asset:
Net Operating loss carryforwards	$	68,890		$	65,132
Depreciation and amortization		2,361			2,476
Accruals and reserves		659			709
Tax credits		535			535
Share-based compensation		3,922			3,832
Total deferred tax assets		76,367			72,684
Less: valuation allowance		(76,367	)		(72,684	)
Total	$	-		$	-

Effective income tax rate and federal statutory rate

The difference between the Company's effective income tax rate and the federal statutory rate for the years ended December 31, 2012 and 2011 is reconciled below:

	December 31,
	2012			2011
Federal tax rate from continuing operations		34.0	%		34.0	%
Permanent Differences		-0.1	%		-0.3	%
State taxes, including permanent differences		-0.1	%		-0.2	%
Change in valuation allowance		-33.8	%		-31.0	%
Other		-0.1	%		-2.7	%
Total		-0.1	%		-0.2	%