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Earnings per Share | 12 Months Ended
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Sep. 30, 2013
Earnings per Share | E. Earnings Per Share We compute basic earnings per share by dividing net income by the weighted average number of common shares outstanding during the period. Diluted earnings per common and potential common share includes the weighted average of additional shares associated with the incremental effect of dilutive restricted stock and restrictive stock units, as prescribed by the FASB guidance on earnings per share. The following table reconciles basic and diluted weighted average shares used in the computation of earnings per share for the years ended September 30, 2013, 2012 and 2011 (in thousands, except per share data):
| Year Ended September 30, |
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| 2013 |  |  | 2012 |  |  | 2011 |
Numerator: |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | $ |  | 42,076 |  |  | $ |  |  | 29,657 |  |  | $ |  |  | (2,715 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |
Weighted average basic shares |  | 11,948 |  |  |  | 11,850 |  |  |  | 11,735 |
Dilutive effect of stock options, restricted stock and restricted stock units (1) |  | 46 |  |  |  | 75 |  |  |  | − |
Weighted average diluted shares with assumed conversions |  | 11,99 4 |  |  |  | 11,925 |  |  |  | 11,735 |
Net earnings (loss) per share: |  |  |  |  |  |  |  |  |  |  |
Basic | $ |  | 3.52 |  |  | $ |  |  | 2.50 |  |  | $ |  |  | (0.23 | )
Diluted | $ |  | 3.51 |  |  | $ |  |  | 2.49 |  |  | $ |  |  | (0.23 | )
(1) In F iscal 2011, a pproximately 23,000 shares related to outstanding stock options and restricted stock units were excluded from the computation of diluted earnings (loss) per share because they were antidilutive.

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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 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: 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FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 3: 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 Reference 4: 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=7655603&loc=d3e1252-109256 Reference 5: 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=16381557&loc=d3e4984-109258 Reference 6: 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=7655603&loc=d3e1278-109256 + Details
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