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Selected Quarterly Financial Data
 12 Months Ended
Dec. 31, 2011
Selected Quarterly Financial Data [Abstract]  
Selected Quarterly Financial Data
Selected Quarterly Financial Data
 
The table below sets forth certain unaudited statements of operations data, and net loss per common share data, for each quarter of 2011 and 2010:
 
(in thousands, except per share data)
 
Quarter Ended
 
March 31
 
June 30
 
September 30
 
December 31
 
 
 
(Unaudited)
 
 
2011
 

 
 

 
 

 
 

Revenues
$
596

 
$
555

 
$
355

 
343

Loss from operations
$
(29,136
)
 
$
(25,926
)
 
$
(25,691
)
 
(33,342
)
Consolidated net loss
$
(29,629
)
 
$
(26,638
)
 
$
(26,103
)
 
(33,845
)
Consolidated net loss per common share, basic and diluted
$
(0.09
)
 
$
(0.08
)
 
$
(0.08
)
 
(0.10
)
Shares used in computing consolidated net loss per common share
337,527

 
337,668

 
337,678

 
350,069

2010
 
 
 
 
 
 
 
Revenues
$
1,641

 
$
1,233

 
$
781

 
$
1,253

Loss from operations
$
(24,966
)
 
$
(24,074
)
 
$
(24,253
)
 
$
(22,425
)
Consolidated net loss
$
(26,070
)
 
$
(25,193
)
 
$
(27,513
)
 
$
(22,999
)
Consolidated net loss per common share, basic and diluted
$
(0.13
)
 
$
(0.07
)
 
$
(0.08
)
 
$
(0.07
)
Shares used in computing consolidated net loss per common share
197,239

 
337,404

 
337,404

 
337,407