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Note 9 Earnings Per Share | 6 Months Ended
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Mar. 31, 2012
Earnings Per Share [Abstract] |
Earnings Per Share [Text Block] | Earnings Per Share Basic and diluted amounts per share are calculated by dividing net income (loss) by the weighted average number of shares of common stock outstanding during the period, as follows:
| Three Months Ended |  | Six Months Ended
| March 31, 2012 |  | April 2, 2011 |  | March 31, 2012 |  | April 2, 2011
| (In thousands, except per share data)
Numerator: |  |  |  |  |  |  |
Net income (loss) | $ | (1,439 | ) |  | $ | 13,065 |  |  | $ | 7,136 |  |  | $ | 41,424 |
Denominator: |  |  |  |  |  |  |
Weighted average used in computing per share amount: |  |  |  |  |  |  |
—Basic | 81,225 |  |  | 80,242 |  |  | 81,059 |  |  | 80,044 |
—Diluted | 81,225 |  |  | 83,940 |  |  | 83,511 |  |  | 83,338 |
Net income (loss) per share: |  |  |  |  |  |  |
—Basic | $ | (0.02 | ) |  | $ | 0.16 |  |  | $ | 0.09 |  |  | $ | 0.52 |
—Diluted | $ | (0.02 | ) |  | $ | 0.16 |  |  | $ | 0.09 |  |  | $ | 0.50 |
The following table presents weighted-average dilutive securities that were excluded from the above calculation because their inclusion would have had an anti-dilutive effect:
| Three Months Ended |  | Six Months Ended
| March 31, 2012 |  | April 2, 2011 |  | March 31, 2012 |  | April 2, 2011
| (In thousands)
Potentially Dilutive Securities: |  |  |  |  |
Employee stock options | 11,391 |  |  | 4,914 |  |  | 7,583 |  |  | 4,741 |
Restricted stock units | 2,198 |  |  | 181 |  |  | 360 |  |  | 120 |
Total | 13,589 |  |  | 5,095 |  |  | 7,943 |  |  | 4,861 |
The Company's outstanding stock options and restricted stock units noted above were anti-dilutive under ASC Topic 260, Earnings per Share, either because the Company incurred a net loss, the exercise price was higher than the Company's stock price or the application of the treasury stock method resulted in an anti-dilutive effect.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6920599&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=6945512&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6920599&loc=d3e1278-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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