Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Tax Disclosure [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign

Income (loss) from continuing operations before income taxes consists of the following components (in thousands):

	Year ended December 31,
	2012		2011			2010
United States	$	1,811	$	(4,584	)	$	(4,161	)

Schedule of Total Tax Expense By Clssification

A summary of total tax expense, by classification, included in the accompanying consolidated statements of income is as follows (in thousands):

	Year ended December 31,
	2012		2011			2010
Current:
Federal	$	6	$	(1,171	)	$	25
State	—		34			73
	$	6	$	(1,137	)	$	98

Schedule of Deferred Tax Assets and Liabilities

Deferred tax assets consist of the following (in thousands):

	Year ended December 31,
	2012			2011
Deferred tax assets:
Accruals and reserves	$	2,271		$	3,288
Net operating loss carryforwards	14,816			21,125
Research and development credit carryforward	858			556
Gross deferred tax asset	$	17,945		$	24,969
Valuation allowance	(17,945		)	(24,969		)
Net deferred tax asset	$	—		$	—

Schedule of Effective Income Tax Rate Reconciliation

Reconciliation of the statutory federal income tax to the Company’s effective tax is as follows:

	Year ended December 31,
	2012		2011		2010
Tax Benefit at Federal statutory rate	34.0	%	34.0	%	34.0	%
State, net of Federal benefit	0.9	%	(0.1	)%	3.6	%
Stock compensation	—	%	0.3	%	(3.5	)%
Research and development credit	—	%	6.5	%	6.9	%
Return to Provision and True-ups	—	%	(2.8	)%	3.8	%
Change in valuation allowance	(35.9	)%	(12.7	)%	(44.6	)%
Other	1.3	%	(0.4	)%	(2.5	)%
Benefit (Provision) for taxes	0.3	%	24.8	%	(2.3	)%

Schedule of Unrecognized Tax Benefits Roll Forward

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):

	Year ended December 31,
	2012			2011			2010
Unrecognized tax benefits at beginning of period	$	1,192		$	1,234		$	810
Gross increases to current period tax positions	—			59			180
Gross (decreases) increases to prior period tax positions	(848		)	(101		)	244
Unrecognized tax benefits at end of period	$	344		$	1,192		$	1,234