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Note 12 - Stock Ownership Plans (Tables) | 12 Months Ended
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Sep. 26, 2021
Notes Tables |
Share-based Payment Arrangement, Option, Activity [Table Text Block] |
(Thousands of Shares) |  | 2021 |  |  | 2020 |  |  | 2019 |
Under option, beginning of year |  |  | 41 |  |  |  | 81 |  |  |  | 110 |
Exercised |  |  | (2 | ) |  |  | — |  |  |  | (9 | )
Canceled |  |  | (3 | ) |  |  | (40 | ) |  |  | (20 | )
Under option, end of year |  |  | 36 |  |  |  | 41 |  |  |  | 81 |
Exercisable, end of year |  |  | 36 |  |  |  | 41 |  |  |  | 81 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block] |
(Dollars) |  | 2021 |  |  | 2020 |  |  | 2019 |
Exercised |  | 11.3 |  |  | — |  |  | 20.6 |
Cancelled |  | 11.3 |  |  | 25.3 |  |  | 20.8 |
Under option, end of year |  | 11.4 |  |  | 11.4 |  |  | 18.2 |
Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block] |
(Dollars) |  |  | Options Outstanding |  |  | Options Exercisable |
Range of |  |  | Number Outstanding (Thousands) |  |  | Weighted Average Remaining Contractual Life (Years) |  |  | Weighted Average Exercise Price |  |  | Number Exercisable (Thousands) |  |  | Weighted Average Exercise Price |
11 - 12 |  |  | 36 |  |  | 0.7 |  |  | 11.4 |  |  | 36 |  |  | 11.4 |
Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] |
(Thousands of Shares) |  | 2021 |  |  | 2020 |  |  | 2019 |
Outstanding, beginning of year |  |  | 155 |  |  |  | 148 |  |  |  | 206 |
Granted |  |  | 46 |  |  |  | 72 |  |  |  | 79 |
Vested |  |  | (45 | ) |  |  | (61 | ) |  |  | (134 | )
Forfeited |  |  | (2 | ) |  |  | (4 | ) |  |  | (3 | )
Outstanding, end of year |  |  | 154 |  |  |  | 155 |  |  |  | 148 |
(Dollars) |  | 2021 |  |  | 2020 |  |  | 2019 |
Outstanding, beginning of year |  | 21.5 |  |  | 24.9 |  |  | 23.1 |
Granted |  | 11.2 |  |  | 16.2 |  |  | 21.8 |
Vested |  | 27.3 |  |  | 23.4 |  |  | 20.3 |
Forfeited |  | 16.1 |  |  | 24.4 |  |  | 21.3 |
Outstanding, end of year |  | 16.7 |  |  | 21.5 |  |  | 24.9 |

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + 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 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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 http://asc.fasb.org/extlink&oid=120381028&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 http://asc.fasb.org/extlink&oid=120381028&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 http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the weighted-average grant-date fair value of equity options or other equity instruments granted during the year. + 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)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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