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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)
In Thousands, except Share data, unless otherwise specified
Total
Common Stock
Paid-in Capital
Accumulated Deficit
Treasury Stock
Stockholders' equity at Sep. 30, 2009 $ 196,555 $ 8 $ 568,054 $ (187,538) $ (183,969)
Stockholders' equity (shares) at Sep. 30, 2009   7,959,000     3,357,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (34,049)     (34,049)  
Amortization of nonvested stock option awards 5,552   5,552    
Amortization of stock option awards 5,817   5,817    
Tax deficiency from stock transactions (3,099)   (3,099)    
Shares issued under employee stock plans, net (shares)   197,000      
Shares issued under employee stock plans, net 2,337 0 2,337    
Issuance of prepaid stock purchase contracts 57,429   57,429    
Common stock issued (shares)   6,985,000      
Common stock issued 166,718 7 166,711    
Common stock redeemed (shares)   (7,000)     27,000
Common stock redeemed (159)   (25)   (134)
Treasury stock utilized (shares)   0     (3,384,000)
Treasury stock utilized 0 0 (184,103)   184,103
Stockholders' equity at Sep. 30, 2010 397,101 15 618,673 (221,587) 0
Stockholders' equity (shares) at Sep. 30, 2010   15,134,000     0
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (204,859)     (204,859)  
Amortization of nonvested stock option awards 3,813   3,813    
Amortization of stock option awards 3,357   3,357    
Tax deficiency from stock transactions (523)   (523)    
Shares issued under employee stock plans, net (shares)   16,000      
Shares issued under employee stock plans, net 101 0 101    
Return and retirement of unvested & vested restricted stock (shares)   (22,000)      
Return and retirement of unvested & vested restricted stock (440)   (440)    
Common stock redeemed (shares)   (10,000)      
Common stock redeemed (170)   (170)    
Stockholders' equity at Sep. 30, 2011 198,380 15 624,811 (426,446) 0
Stockholders' equity (shares) at Sep. 30, 2011   15,118,000     0
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net loss (145,326)     (145,326)  
Tender Offer of Mandatory Convertible & TEU (debt to stock conversion) (shares)   4,969,000      
Stock Issued During Period, Value, Conversion of Convertible Securities, Net of Adjustments 56,675 5 56,670 0 0
Amortization of nonvested stock option awards 2,569   2,569    
Amortization of stock option awards 1,459   1,459    
Tax deficiency from stock transactions (85)   (85)    
Shares issued under employee stock plans, net (shares)   124,000      
Shares issued under employee stock plans, net 0 0 0    
Issuance of prepaid stock purchase contracts 88,361   88,361    
Common stock issued (shares)   4,400,000      
Common stock issued 60,340 5 60,335    
Common stock redeemed (shares)   (9,000)      
Common stock redeemed (126)   (126)    
Stockholders' equity at Sep. 30, 2012 $ 262,247 $ 25 $ 833,994 $ (571,772) $ 0
Stockholders' equity (shares) at Sep. 30, 2012   24,602,000     0