Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Taxes [Abstract]

Components of Income Tax Expense (Benefit)

The benefit (provision) for income taxes is comprised of the following:

	Year Ended December 31, 2013			Year Ended December 31, 2012			Year Ended December 31, 2011
Current:
Federal	$	(354	)	$	12,154		$	8,036
State		(397	)		428			767
Foreign		-			-			9
		(751	)		12,582			8,812
Deferred:
Federal		-			(40	)		(3,331	)
State		-			(7	)		(1	)
		-			(47	)		(3,332	)
Total benefit (provision) for income taxes	$	(751	)	$	12,535		$	5,480

Effective Income Tax Rate Reconciliation

A reconciliation of the United States federal statutory income tax rate to our effective income tax rate is as follows:

	Year Ended December 31, 2013			Year Ended December 31, 2012			Year Ended December 31, 2011
United States federal statutory rate		35.00	%		35.00	%		35.00	%
State taxes, net of federal benefit		(1.48	)%		1.07	%		2.19	%
Valuation allowance		(37.11	)%		(4.41	)%		(4.39	)%
Stock options		(0.17	)%		0.14	%		(1.92	)%
Prior year true-up		(1.32	)%		1.03	%		-
Warrants		2.10	%		(0.82	)%		(8.60	)%
Other		0.18	%		(0.32	)%		1.79	%
Balance at the end of the year		(2.80	)%		31.69	%		24.07	%

Deferred Tax Assets and Liabilities

Deferred tax assets (liabilities) consist of the following:

	Year Ended December 31, 2013			Year Ended December 31, 2012			Year Ended December 31, 2011
Deferred tax assets:
Reserves and accruals	$	58		$	50		$	46
State tax		1			1			1
Research and development credits and other credits		907			-			-
Net operating loss carry forward		8,249			2,254			2,822
Stock based compensation		6,600			4,506			3,155
Other		154			177			211
Total deferred tax assets		15,969			6,988			6,235
Valuation allowance		(15,955	)		(6,969	)		(6,168	)
Deferred tax assets after valuation allowance		14			19			67
Deferred tax liability:
Depreciation and amortization		(14	)		(19	)		(20	)
Total deferred tax liability		(14	)		(19	)		(20	)
Net deferred tax assets	$	-		$	-		$	47

Unrecognized Tax Benefits Reconciliation

A reconciliation of beginning and ending amounts of unrecognized tax benefits follows:

	Year Ended December 31, 2013		Year Ended December 31, 2012		Year Ended December 31, 2011
Balance at the beginning of the year	$	128	$	128	$	128
Additions based on tax positions related to the current year		-		-		-
Additions for tax positions of prior years		188		-		-
Settlements		-		-		-
Lapse of applicable statute of limitations		-		-		-
Balance at the end of the year	$	316	$	128	$	128