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Earnings Per Share | 9 Months Ended
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Jun. 30, 2013
Earnings Per Share [Abstract] |
Earnings Per Share | C. EARNINGS PER SHARE The following table sets forth the computation of basic and diluted earnings per share (in thousands, except per share data):
| Three Months Ended |  | Nine Months Ended
| June 30, |  | June 30,
| 2013 |  | 2012 |  | 2013 |  | 2012
Numerator: |  |  |  |  |  |  |  |  |  |  |
Net income | $ | 9,305 |  | $ | 12,138 |  | $ | 23,508 |  | $ | 17,804
Denominator: |  |  |  |  |  |  |  |  |  |  |
Weighted average basic shares |  | 11,941 |  |  | 11,812 |  |  | 11,932 |  |  | 11,782
Dilutive effect of stock options and restricted stock units |  | 75 |  |  | 49 |  |  | 75 |  |  | 52
Weighted average diluted shares with assumed conversions |  | 12,016 |  |  | 11,861 |  |  | 12,007 |  |  | 11,834
Net earnings per share: |  |  |  |  |  |  |  |  |  |  |
Basic | $ | 0.78 |  | $ | 1.03 |  | $ | 1.97 |  | $ | 1.51
Diluted | $ | 0.77 |  | $ | 1.02 |  | $ | 1.96 |  | $ | 1.50
All options were included in the computation of diluted earnings per share for the thr ee and nine months ended June 30, 2012, as the options' exercise price was less than the average market price of our common stock. All outstanding options expired in June 2012.

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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FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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