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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 | Accumulated Other Comprehensive Loss
--- | --- | --- | --- | --- | ---
Stockholders' equity at Sep. 30, 2011 | $ 198,380 | $ 15 | $ 624,811 | $ (426,446) |
Stockholders' equity (shares) at Sep. 30, 2011 |  | 15,118,000 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income (loss) | (145,326) |  |  | (145,326) |
Unrealized loss related to available-for-sale securities | 0 |  |  |  |
Total comprehensive income | (145,326) |  |  |  |
Tender Offer of Mandatory Convertible & TEU, Conversion of Mandatory Convertible Notes, & Conversion of TEU (debt to stock conversion) (shares) |  | 4,969,000 |  |  |
Tender Offer of Mandatory Convertible & TEU, Conversion of Mandatory Convertible Notes, & Conversion of TEU (debt to stock conversion) | 56,675 | 5 | 56,670 |  |
Amortization of nonvested stock option awards | 2,569 |  | 2,569 |  |
Amortization of stock option awards | 1,459 |  | 1,459 |  |
Tax excess 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 |  |
Common stock issued (shares) |  | 4,400,000 |  |  |
Common stock issued | 60,340 | 5 | 60,335 |  |
Issuance of prepaid stock purchase contracts (shares) |  | 0 |  |  |
Issuance of prepaid stock purchase contracts | 88,361 |  | 88,361 |  |
Common stock redeemed (shares) |  | (9,000) |  |  |
Common stock redeemed | (126) |  | (126) |  |
Stockholders' equity at Sep. 30, 2012 | 262,247 | 25 | 833,994 | (571,772) |
Stockholders' equity (shares) at Sep. 30, 2012 |  | 24,602,000 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income (loss) | (33,868) |  |  | (33,868) |
Unrealized loss related to available-for-sale securities | 0 |  |  |  |
Total comprehensive income | (33,868) |  |  |  |
Tender Offer of Mandatory Convertible & TEU, Conversion of Mandatory Convertible Notes, & Conversion of TEU (debt to stock conversion) (shares) |  | 566,000 |  |  |
Tender Offer of Mandatory Convertible & TEU, Conversion of Mandatory Convertible Notes, & Conversion of TEU (debt to stock conversion) | 9,402 |  | 9,402 |  |
Amortization of nonvested stock option awards | 1,986 |  | 1,986 |  |
Amortization of stock option awards | 872 |  | 872 |  |
Exercises of stock options (shares) |  | 1,000 |  |  |
Exercises of stock options | 7 |  | 7 |  |
Tax excess from stock transactions | (36) |  | (36) |  |
Shares issued under employee stock plans, net (shares) |  | 83,000 |  |  |
Shares issued under employee stock plans, net | 68 | 0 | 68 |  |
Common stock issued (shares) |  | 0 |  |  |
Common stock issued | (7) | 0 | (7) |  |
Common stock redeemed (shares) |  | (6,000) |  |  |
Common stock redeemed | (121) |  | (121) |  |
Stockholders' equity at Sep. 30, 2013 | 240,550 | 25 | 846,165 | (605,640) |
Stockholders' equity (shares) at Sep. 30, 2013 |  | 25,246,000 |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |
Net income (loss) | 34,383 |  |  | 34,383 |
Unrealized loss related to available-for-sale securities | (1,276) |  |  |  | (1,276)
Total comprehensive income | 33,107 |  |  |  |
Tender Offer of Mandatory Convertible & TEU, Conversion of Mandatory Convertible Notes, & Conversion of TEU (debt to stock conversion) (shares) |  | 1,368,000 |  |  |
Tender Offer of Mandatory Convertible & TEU, Conversion of Mandatory Convertible Notes, & Conversion of TEU (debt to stock conversion) | 2,484 | 2 | 2,482 |  |
Amortization of nonvested stock option awards | 1,755 |  | 1,755 |  |
Amortization of stock option awards | 832 |  | 832 |  |
Exercises of stock options (shares) |  | 3,000 |  |  |
Exercises of stock options | 39 |  | 39 |  |
Tax excess from stock transactions | 698 |  | 698 |  |
Shares issued under employee stock plans, net (shares) |  | 596,000 |  |  |
Shares issued under employee stock plans, net | 103 | 0 | 103 |  |
Forfeiture of restricted stock (shares) |  | (16,000) |  |  |
Common stock redeemed (shares) |  | (24,000) |  |  |
Common stock redeemed | (450) |  | (450) |  |
Stockholders' equity at Sep. 30, 2014 | $ 279,118 | $ 27 | $ 851,624 | $ (571,257) | $ (1,276)
Stockholders' equity (shares) at Sep. 30, 2014 |  | 27,173,000 |  |  |

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- Definition Equity impact of the value of stock bought back by the entity at the exercise price or redemption price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
Name: | us-gaap_StockRedeemedOrCalledDuringPeriodValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration