Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Taxes

Schedule of significant components of deferred tax assets (liabilities)

Significant components of our deferred tax assets (liabilities) as of December 31, 2012 and 2011 are as follows (in thousands):

	December 31
	2012			2011
Net operating loss carryforwards	$	29,919		30,094
Net operating loss carryforwards of foreign subsidiaries	374			374
Book over tax depreciation	(41		)	(30	)
Intangible assets	—			40
Stock-based compensation expense	490			412
Other	130			121
Deferred tax assets	30,872			31,011
Valuation allowance for deferred tax assets	(30,872		)	(31,011	)
Deferred tax assets, net of allowance	$	—		—

Schedule of differences between the provision for income taxes and income taxes computed using the federal statutory rate

The differences between the provision for income taxes and income taxes computed using the federal statutory rate for the years ended December 31, 2012 and 2011 are as follows (in thousands):

	2012			2011
Reconciliation of income tax benefit to statutory rate:
Income tax benefit at statutory rate	$	(84	)	(317		)
State income taxes, net of federal income tax benefit	—			2
Changes in state net operating loss carryforwards	(2		)	10
Permanent differences	9			5
True-up prior year NOL	213			—
Change in valuation allowance	(138		)	277
Other	2			23
	$	—		$	—