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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Sep. 30, 2014
Summary of Significant Accounting Policies |
Schedule of estimated useful lives of property and equipment |
Computers and purchased software |  | One to five years
Office equipment |  | Three years
Furniture and fixtures |  | Five to seven years
Leasehold improvements |  | Shorter of lease term or useful life
Summary of potential outstanding common stock |
|  | September 30, |
|  | 2014 |  | 2013 |  | 2012 |
|  | (dollars in thousands except per share and share data) |
Weighted average shares calculation: |  |  |  |  |  |  |  |  |  |
Basic weighted average shares outstanding |  |  | 31,243,932 |  |  | 31,616,926 |  |  | 30,854,796 |
Treasury stock effect of options and restricted stock |  |  | 151,369 |  |  | 1,040,310 |  |  | 1,928,283 |
Diluted weighted average common shares outstanding |  |  | 31,395,301 |  |  | 32,657,236 |  |  | 32,783,079 |
Net income |  | $ | 30,390 |  | $ | 41,104 |  | $ | 48,296 |
Basic income per common share |  | $ | 0.97 |  | $ | 1.30 |  | $ | 1.57 |
Diluted income per common share |  | $ | 0.97 |  | $ | 1.26 |  | $ | 1.47 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph b -Article 5 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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