Income Taxes (Tables)

12 Months Ended

Dec. 31, 2013

Income Taxes [Abstract]

Components of The Income Tax Provision (Benefit)

The components of the income tax provision are as follows (in thousands):

	2013		2012		2011
Current U.S.	$	-	$	-	$	-
Current foreign		25		-		412
Deferred		-		-		-
Net provision	$	25	$	-	$	412

Deferred Tax Assets (Liabilities)

Deferred tax assets (liabilities) consist of the following at December 31 (in thousands):

	2013			2012
Net operating losses U.S.	$	123,907		$	122,731
Net operating losses foreign		6,405			-
Research tax credits		9,175			5,693
Other		6,844			7,326
Total deferred tax assets		146,331			135,750
Intangibles		(3,573	)		-
Other		(227	)		(335	)
Total deferred tax liabilities		(3,800	)		(335	)
Net deferred tax assets		142,531			135,415
Less valuation allowance		(142,531	)		(135,415	)
Deferred tax assets, net	$	-		$	-

Tax Rate Differences

The differences between the U.S. federal statutory tax rate and the Company's effective tax rate are as follows:

	2013			2012			2011
Statutory federal tax rate		(34	)%		(34	)%		(34	)%
State income taxes, net of federal benefit		(3	)%		(8	)%		(9	)%
Research and development and other tax credits		(7	)%		0	%		(5	)%
Expiration of net operating losses		0	%		6	%		10	%
Other		3	%		3	%		(3	)%
Change in valuation allowance		41	%		33	%		43	%
		0	%		0	%		2	%

Tax Return Reported Federal Net Operating Losses and Tax Credits Available

As of December 31, 2013, the Company had tax return reported federal net operating losses and tax credits available as follows (in thousands):

	Amount
Federal net operating losses expiring through the year 2033	$	335,892
Research tax credits expiring through the year 2033		9,081
Alternative-minimum tax credit (no expiration)		94
Foreign net operating losses (no expiration)		29,115

Reconciliation of Unrecognized Tax Benefits

Tabular Reconciliation of Unrecognized Tax Benefits (in thousands):

	Amount
Unrecognized tax benefits as of January 1, 2012	$	4,875
Gross increases - tax positions in prior period		-
Gross decreases - tax positions in prior period		(74	)
Gross increases - current-period tax positions		-
Increases (decreases) from settlements		-
Unrecognized tax benefits as of December 31, 2012	$	4,801
Gross increases - tax positions in prior period		-
Gross decreases - tax positions in prior period		-
Gross increases - current-period tax positions		-
Increases (decreases) from settlements		-
Unrecognized tax benefits as of December 31, 2013	$	4,801