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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Schedule of components of income tax expense (benefit)

The components of the provision for income taxes are presented in the following table:

	Year Ended December 31,
	2014				2013				2012
Current:
Federal	$	—			$	—			$	—
State	2,000				(1,000		)		7,000
	2,000				(1,000		)		7,000
Deferred:
Federal	18,000				15,000				20,000
State	9,000				17,000				3,000
	27,000				32,000				23,000
	$	29,000			$	31,000			$	30,000

Schedule of effective income tax rate reconciliation

The reconciliation of income taxes attributable to operations computed at the statutory tax rates to income tax expense (recovery), using a 35% statutory tax rate, is:

	Year Ended December 31,
	2014				2013				2012
Income (benefit) taxes at statutory rates	$	(12,639,000	)		$	(23,118,000	)		$	(6,894,000	)
State income tax, net of federal benefit	(2,362,000		)		(1,651,000		)		(1,234,000		)
Change in valuation allowance	14,235,000				8,819,000				7,415,000
Research and development tax credits	(849,000		)		(735,000		)		190,000
Fair value warrant	(180,000		)		16,129,000				(811,000		)
Stock compensation	1,573,000				279,000				603,000
Expired NOL's and credits	728,000				338,000				405,000
Limited NOL's and credits	(749,000		)		605,000				(124,000		)
Change in state tax rate	(60,000		)		(623,000		)		438,000
Other	332,000				(12,000		)		42,000
	$	29,000			$	31,000			$	30,000

Schedule of deferred tax assets and liabilities

Significant components of the Company’s deferred tax assets and liabilities as of December 31, 2014 and 2013 are shown below:

	As of December 31,
	2014				2013
Deferred tax assets:
Capitalized research expense	$	2,059,000			$	2,782,000
Net operating loss carryforwards	64,354,000				48,846,000
Research and development and other tax credits	2,417,000				1,877,000
Other	8,491,000				8,641,000
	77,321,000				62,146,000
Valuation allowance	(75,363,000		)		(61,061,000		)
Total deferred tax assets	1,958,000				1,085,000
Deferred tax liabilities:
Acquired intangibles	(804,000		)		(1,096,000		)
Investment in affiliated entity	(1,315,000		)		(123,000		)
Net deferred tax liabilities	$	(161,000	)		$	(134,000	)

Summary of Operating Loss Carryforwards

The California net operating loss carry forwards will expire as follows:

	Amount (in millions)
2015	$	0.5
2016	0.5
2017	0.5
2028 and beyond	58.6
Total	$	60.1

Schedule of unrecognized tax benefits rollforward

The following table summarizes the activity related to our unrecognized tax benefits:

	Year ended December 31,
	2014				2013				2012
Balance at beginning of the year	$	2,416,000			$	1,896,000			$	1,829,000
Increases related to current year tax positions	331,000				305,000				72,000
Increases (Decreases) related to prior year tax positions	12,000				215,000				(5,000		)
Balance at end of the year	$	2,759,000			$	2,416,000			$	1,896,000

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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Tabular disclosure of the change in unrecognized tax benefits.

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Tabular disclosure of pertinent information, such as tax authority, amounts, and expiration dates, of net operating loss carryforwards, including an assessment of the likelihood of utilization.

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