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Consolidated Statements Of Preferred Stock And Stockholders' Equity (Deficit) (USD $)
In Thousands, except Share data
Accretion Of Series A [Member]
Redeemable Convertible Preferred Stock [Member]
USD ($)
Accretion Of Series A [Member]
Series A [Member]
USD ($)
Accretion Of Series A [Member]
Additional Paid-In Capital [Member]
USD ($)
Accretion Of Series A [Member]
USD ($)
Accretion Of Series B [Member]
Series B [Member]
USD ($)
Accretion Of Series B [Member]
Additional Paid-In Capital [Member]
USD ($)
Accretion Of Series B [Member]
USD ($)
Redeemable Convertible Preferred Stock [Member]
USD ($)
Series A [Member]
Issuance Of Series A On February 22, 2006 [Member]
USD ($)
Series A [Member]
Issuance Of Series A On December 8, 2006 [Member]
USD ($)
Series A [Member]
Issuance For Notes Payable And Related Accrued Interest On February 22, 2006 [Member]
USD ($)
Series A [Member]
USD ($)
Series B [Member]
Issuance For Series B On May 31, 2007 [Member]
USD ($)
Series B [Member]
Issuance For Series B On December 28, 2007 [Member]
USD ($)
Series B [Member]
USD ($)
Common Stock [Member]
Common Conversion [Member]
Common Stock [Member]
Adjustment For Fractional Shares [Member]
Common Stock [Member]
Notes And Related Accrued Interest [Member]
USD ($)
Common Stock [Member]
Cash, Net Of Offering Costs [Member]
Common Stock [Member]
Issuance For Notes Payable And Related Accrued Interest On January 3, 2005 [Member]
Common Stock [Member]
Issuance For Notes Payable And Related Accrued Interest On October 14, 2005 [Member]
Common Stock [Member]
Issuance For Intellectual Property License Rights On October 14, 2005 [Member]
Common Stock [Member]
Issuance For Intellectual Property License Rights On February 21, 2006 [Member]
Common Stock [Member]
Issuance For Intellectual Property License Rights On February 22, 2006 [Member]
USD ($)
Common Stock [Member]
Issuance For Intellectual Property License Rights On June 23, 2006 [Member]
Common Stock [Member]
Issuance For Intellectual Property License Rights On November 7, 2006 [Member]
Common Stock [Member]
Issuance For Intellectual Property License Rights On January 18, 2007 [Member]
Common Stock [Member]
Issuance For Intellectual Property License Rights On June 30, 2007 [Member]
Common Stock [Member]
Issuance Of Common Stock For Commercial License Rights, On July 19, 2007 [Member]
Common Stock [Member]
Issuance Of Shares To Executive Subject To Repurchase [Member]
Common Stock [Member]
USD ($)
Additional Paid-In Capital [Member]
Notes And Related Accrued Interest [Member]
USD ($)
Additional Paid-In Capital [Member]
Cash, Net Of Offering Costs [Member]
USD ($)
Additional Paid-In Capital [Member]
Issuance For Notes Payable And Related Accrued Interest On January 3, 2005 [Member]
USD ($)
Additional Paid-In Capital [Member]
Issuance For Notes Payable And Related Accrued Interest On October 14, 2005 [Member]
USD ($)
Additional Paid-In Capital [Member]
Issuance For Intellectual Property License Rights On October 14, 2005 [Member]
USD ($)
Additional Paid-In Capital [Member]
Issuance For Intellectual Property License Rights On February 21, 2006 [Member]
USD ($)
Additional Paid-In Capital [Member]
Issuance For Intellectual Property License Rights On February 22, 2006 [Member]
USD ($)
Additional Paid-In Capital [Member]
Issuance For Intellectual Property License Rights On June 23, 2006 [Member]
USD ($)
Additional Paid-In Capital [Member]
Issuance For Intellectual Property License Rights On January 18, 2007 [Member]
USD ($)
Additional Paid-In Capital [Member]
Issuance For Intellectual Property License Rights On June 30, 2007 [Member]
USD ($)
Additional Paid-In Capital [Member]
USD ($)
Deficit Accumulated During The Development Stage [Member]
USD ($)
Notes And Related Accrued Interest [Member]
USD ($)
Cash, Net Of Offering Costs [Member]
USD ($)
Issuance For Notes Payable And Related Accrued Interest On January 3, 2005 [Member]
USD ($)
Issuance For Notes Payable And Related Accrued Interest On October 14, 2005 [Member]
USD ($)
Issuance For Intellectual Property License Rights On October 14, 2005 [Member]
USD ($)
Issuance For Intellectual Property License Rights On February 21, 2006 [Member]
USD ($)
Issuance For Intellectual Property License Rights On February 22, 2006 [Member]
USD ($)
Issuance For Intellectual Property License Rights On June 23, 2006 [Member]
USD ($)
Issuance For Intellectual Property License Rights On January 18, 2007 [Member]
USD ($)
Issuance For Intellectual Property License Rights On June 30, 2007 [Member]
USD ($)
Total
USD ($)
Beginning Balance, value at Dec. 17, 2001                                                                                                            
Net loss                                                                                     $ (116)                     $ (116)
Issuance of common stock for cash, net of offering costs, value                                                                 1                       1                  
Issuance of common stock for cash, net of offering costs, shares                                     15,529                                                                      
Ending Balance, value at Dec. 31, 2003                                                                                   1 (116)                     (115)
Ending Balance, shares at Dec. 31, 2003                                                               15,529                                              
Net loss                                                                                     (511)                     (511)
Issuance of common stock for cash, net of offering costs, value                                                                 7                       7                  
Issuance of common stock for cash, net of offering costs, shares                                     118,319                                                                      
Ending Balance, value at Dec. 31, 2004                                                                                   8 (627)                     (619)
Ending Balance, shares at Dec. 31, 2004                                                             133,848                                              
Net loss                                                                                     (1,459)                     (1,459)
Issuance of common stock for cash, net of offering costs, value                                                                 1 1 1,354 44                 1 1 1,354 44            
Issuance of common stock for cash, net of offering costs, shares                                     17,533 17,867 186,571 5,419                                                                
Ending Balance, value at Dec. 31, 2005                                                                                   1,408 (2,086)                     (678)
Beginning Balance, shares at Dec. 31, 2005                                                             361,238                                              
Offering costs 17             (17)       (98)                                                                                    
Share-based compensation                                                                                   39                       39
Issuance of common stock upon exercise of stock options, for cash, shares                                                             48,111                                              
Issuance of common stock upon exercise of stock options, for cash, value                                                                                   3                       3
Net loss                                                                                     (5,241)                     (5,241)
Issuance of common stock for cash, net of offering costs, value                 9,316 5,000 684                         1                         75 59 15                   75 60 15      
Issuance of common stock for cash, net of offering costs, shares                 5,727,354 3,074,086 420,817                       104,229 83,443 15,028 229                                                        
Ending Balance, value at Dec. 31, 2006                       14,919                                     1                     1,582 (7,327)                     (5,744)
Ending Balance, shares at Dec. 31, 2006                       9,222,257                                     612,278                                              
Offering costs   19 (19) (19) 18 (18) (18)               (147)                                                                              
Share-based compensation                                                                                   50                       50
Issuance of common stock upon exercise of stock options, for cash, shares                                                             13,359                                              
Issuance of common stock upon exercise of stock options, for cash, value                                                                                   16                       16
Net loss                                                                                     (13,994)                     (13,994)
Issuance of common stock for cash, net of offering costs, value                         9,000 9,000                                                   13 7                     13 7  
Issuance of common stock for cash, net of offering costs, shares                         3,688,902 2,766,677                         7,817 3,852 16,698 83,490                                                
Ending Balance, value at Dec. 31, 2007                       14,938     17,871                               1                     1,631 (21,321)                     (19,689)
Ending Balance, shares at Dec. 31, 2007                       9,222,257     6,455,579                               737,494                                              
Offering costs   20 (20) (20) 36 (36) (36)                                                                                              
Share-based compensation                                                                                   545                       545
Estimated fair value of warrants issued in connection with convertible notes payable                                                                                   399                       399
Issuance of common stock upon exercise of stock options, for cash, shares                                                             216,926                                              
Issuance of common stock upon exercise of stock options, for cash, value                                                                                   54                       54
Net loss                                                                                     (19,431)                     (19,431)
Ending Balance, value at Dec. 31, 2008                       14,958     17,907                               1                     2,573 (40,752)                     (38,178)
Ending Balance, shares at Dec. 31, 2008                       9,222,257     6,455,579                               954,420                                              
Offering costs   42 (42) (42) 93 (93) (93)                                                                                              
Share-based compensation                                                                                   845                       845
Issuance of common stock upon exercise of stock options, for cash, shares                                                             63,123                                              
Issuance of common stock upon exercise of stock options, for cash, value                                                                                   114                       114
Net loss                                                                                     (9,138)                     (9,138)
Adjustment for fractional shares on common conversion                               (39) (609)                                                                          
Deemed preferred stock dividend for additional common shares issuable under anti-dilution provision                             781                                                     (781)                       (781)
Conversion of preferred stock, shares                       (9,222,257)     (6,455,579)                               3,042,740                                              
Conversion of preferred stock and convertible notes and related accrued interest, value                       (15,000)     (18,781)     1                         3 8,500                   33,778   8,501                   33,781
Restricted stock release from restriction                                                                                   75                       75
Conversion of convertible notes and related accrued interest, shares                                   872,792                                                                        
Conversion of warrants for preferred stock                                                                                   36                       36
Merger with Nuvelo, Inc., shares                                                             2,686,957                                              
Merger with Nuvelo, Inc., value                                                             3                     11,910                       11,913
Issuance of common stock under employee stock purchase plan and upon vesting of restricted stock units, shares                                                             1,064                                              
Issuance of common stock under employee stock purchase plan and upon vesting of restricted stock units, value                                                                                   2                       2
Estimated fair value of warrants issued in connection with lease termination                                                                                   377                       377
Ending Balance, value at Dec. 31, 2009                                                             8                     57,294 (49,890)                     7,412
Ending Balance, shares at Dec. 31, 2009                                                             7,620,448                                              
Share-based compensation                                                                                   458                       458
Issuance of common stock upon exercise of stock options, for cash, shares                                                             49,487                                              
Issuance of common stock upon exercise of stock options, for cash, value                                                                                   139                       139
Net loss                                                                                     (8,420)                     (8,420)
Issuance of common stock for cash, net of offering costs, value                                                             1                     7,181                       7,182
Issuance of common stock for cash, net of offering costs, shares                                                             1,164,600                                              
Ending Balance, value at Dec. 31, 2010                                                             9                     65,072 (58,310)                     6,771
Ending Balance, shares at Dec. 31, 2010                                                             8,834,535                                              
Share-based compensation                                                                                   308                       308
Issuance of common stock upon exercise of stock options, for cash, shares                                                             1,126                                              
Net loss                                                                                     (5,364)                     (5,364)
Issuance of common stock for cash, net of offering costs, value                                                             3                     4,014                       4,017
Issuance of common stock for cash, net of offering costs, shares                                                             3,347,338                                              
Ending Balance, value at Dec. 31, 2011                                                             $ 12                     $ 69,394 $ (63,674)                     $ 5,732
Ending Balance, shares at Dec. 31, 2011                                                             12,182,999