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Note 12 - Stock-based Compensation (Tables) | 12 Months Ended
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Aug. 31, 2022
Notes Tables |
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Fiscal Year 2022 |  |  | Fiscal Year 2021 |
Dividend yield |  |  | 2.46 | % |  |  | 1.65 | %
Expected volatility |  |  | 45.2 | % |  |  | 45.4 | %
Expected life of option (years) |  |  | 10 |  |  |  | 10 |
Weighted average risk-free interest rate |  |  | 3.30 | % |  |  | 0.77 | %
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Number of Shares (#) |  |  | Weighted Average Exercise Price |  |  | Aggregate Intrinsic Value |
Outstanding at August 31, 2020 |  |  | 1,127,968 |  |  | $ | 9.63 |  |  |  |  |
Options granted |  |  | 419,874 |  |  |  | 8.24 |  |  |  |  |
Options exercised |  |  | (77,645 | ) |  |  | 8.18 |  |  |  |  |
Options terminated |  |  | (43,546 | ) |  |  | 9.63 |  |  |  |  |
Outstanding at August 31, 2021 |  |  | 1,426,651 |  |  | $ | 9.30 |  |  |  |  |
Options granted |  |  | 174,840 |  |  |  | 16.97 |  |  |  |  |
Options exercised |  |  | (51,218 | ) |  |  | 6.60 |  |  |  |  |
Options terminated |  |  | (5,546 | ) |  |  | 18.23 |  |  |  |  |
Outstanding at August 31, 2022 |  |  | 1,544,727 |  |  | $ | 10.23 |  |  | $ | 4,151,365 |
Exercisable at August 31, 2022 |  |  | 1,156,211 |  |  | $ | 9.58 |  |  | $ | 3,394,957 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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