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EXCEL - IDEA: XBRL DOCUMENT - ARIAD PHARMACEUTICALS INCFinancial_Report.xls
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v2.4.0.6
Changes in Stockholders' Equity (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2012
Mar. 31, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Dec. 31, 2010
Stockholders Equity Note [Line Items]              
Balance, January 1, 2012   $ 220,141   $ 220,141      
Issuance of common stock pursuant to warrant exercises (in shares)   5,805,843       3,757,767 1,220,414
Issuance of common stock pursuant to warrant exercises       87,045      
Issuance of common stock pursuant to ARIAD stock plans       8,202      
Stock-based compensation       12,289      
Payment of tax withholding obligations related to stock based compensation       (2,615)      
Net unrealized gains on marketable securities       20      
Net loss (53,213)   13,910 (160,419) (71,801)    
Balance, September 30, 2012 164,663     164,663   220,141  
Common stock
             
Stockholders Equity Note [Line Items]              
Balance, January 1, 2012 (in shares)   157,608,702   157,608,702      
Balance, January 1, 2012   158   158      
Issuance of common stock pursuant to warrant exercises (in shares)       5,805,843      
Issuance of common stock pursuant to warrant exercises       6      
Issuance of common stock pursuant to ARIAD stock plans (in shares)       3,161,125      
Issuance of common stock pursuant to ARIAD stock plans       3      
Balance, September 30, 2012 (in shares) 166,575,670     166,575,670      
Balance, September 30, 2012 167     167      
Additional Paid-in Capital
             
Stockholders Equity Note [Line Items]              
Balance, January 1, 2012   776,946   776,946      
Issuance of common stock pursuant to warrant exercises       87,039      
Issuance of common stock pursuant to ARIAD stock plans       8,199      
Stock-based compensation       12,289      
Payment of tax withholding obligations related to stock based compensation       (2,615)      
Balance, September 30, 2012 881,858     881,858      
Accumulated Other Comprehensive Loss
             
Stockholders Equity Note [Line Items]              
Net unrealized gains on marketable securities       20      
Balance, September 30, 2012 20     20      
Accumulated Deficit
             
Stockholders Equity Note [Line Items]              
Balance, January 1, 2012   (556,963)   (556,963)      
Net loss       (160,419)      
Balance, September 30, 2012 $ (717,382)     $ (717,382)