Consolidated Statements of Earnings - USD ($) shares in Thousands, $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Aug. 31, 2026 |
Aug. 31, 2025 |
Aug. 31, 2024 |
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| Income Statement [Abstract] | |||
| Operating revenues | $ 635,863 | $ 676,368 | $ 607,074 |
| Cost of operating revenues | 452,080 | 465,588 | 416,019 |
| Gross profit | 183,783 | 210,780 | 191,055 |
| Operating expenses: | |||
| Selling expense | 42,258 | 41,740 | 39,905 |
| General and administrative expense | 57,598 | 62,986 | 57,419 |
| Engineering and research expense | 17,002 | 17,930 | 17,123 |
| Total operating expenses | 116,858 | 122,656 | 114,447 |
| Operating income | 66,925 | 88,124 | 76,608 |
| Other income (expense): | |||
| Interest income, net | 9,890 | 5,885 | 1,955 |
| Other (expense) income, net | (1,500) | 574 | 487 |
| Total other income (expense) | 8,390 | 6,459 | 2,442 |
| Earnings before income taxes | 75,315 | 94,583 | 79,050 |
| Income tax expense | 19,662 | 20,531 | 12,793 |
| Net earnings | $ 55,653 | $ 74,052 | $ 66,257 |
| Earnings per share: | |||
| Basic | $ 5.35 | $ 6.82 | $ 6.04 |
| Diluted | $ 5.33 | $ 6.78 | $ 6.01 |
| Shares used in computing earnings per share: | |||
| Basic | 10,397 | 10,859 | 10,976 |
| Diluted | 10,436 | 10,918 | 11,017 |
| Cash dividends declared per share | $ 1.49 | $ 1.45 | $ 1.41 |
| X | ||||||||||
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate cost of goods produced and sold and services rendered during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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| X | ||||||||||
- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Expenses recognized in the period that are directly related to the selling and distribution of products or services. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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