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Accounting Policies (Tables) | 12 Months Ended
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Sep. 30, 2025
Accounting Policies [Abstract] |
Schedule of Inventories | Inventories consist of the following (in thousands):
|  | September 30,
|  | 2025 |  | 2024
Finished goods |  | $ | 26,933 |  |  | $ | 27,922 |
Raw materials |  | 50,296 |  |  | 48,456 |
|  | $ | 77,229 |  |  | $ | 76,378 |
Property, Plant and Equipment | Property and equipment consist of the following (in thousands):
|  | September 30,
|  | 2025 |  | 2024
Computer equipment |  | $ | 228,514 |  |  | $ | 206,861 |
Software |  | 70,808 |  |  | 71,690 |
Office furniture and equipment |  | 46,903 |  |  | 44,776 |
Leasehold improvements |  | 190,637 |  |  | 186,179 |
|  | 536,862 |  |  | 509,506 |
Accumulated depreciation and amortization |  | (379,915) |  |  | (358,563) |
|  | $ | 156,947 |  |  | $ | 150,943 |
Schedule of Earnings Per Share, Basic and Diluted | The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share data):
|  | Years Ended September 30,
|  | 2025 |  | 2024 |  | 2023
Numerator |  |  |  |  |  |
Net income |  | $ | 692,380 |  |  | $ | 566,778 |  |  | $ | 394,948 |
Denominator |  |  |  |  |  |
Weighted average shares outstanding — basic |  | 57,904 |  |  | 58,720 |  |  | 59,909 |
Dilutive effect of common shares from stock options and restricted stock units |  | 780 |  |  | 639 |  |  | 361 |
Weighted average shares outstanding — diluted |  | 58,684 |  |  | 59,359 |  |  | 60,270 |
Basic net income per share |  | $ | 11.96 |  |  | $ | 9.65 |  |  | $ | 6.59 |
Diluted net income per share |  | $ | 11.80 |  |  | $ | 9.55 |  |  | $ | 6.55 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 + Details
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