Note 12 - Stock-based Compensation - Summary of Restricted Stock Unit and Performance Unit Award Activity (Details) - $ / shares |
12 Months Ended | |
|---|---|---|
Sep. 28, 2019 |
Sep. 29, 2018 |
|
| Units outstanding, beginning of fiscal period (in shares) | 532,500 | 512,856 |
| Units outstanding, beginning of fiscal period, weighted average grant date fair value (in dollars per share) | $ 16.12 | $ 13.09 |
| Units granted (in shares) | 205,500 | |
| Units granted, weighted average grant date fair value (in dollars per share) | $ 20.57 | |
| Units issued (in shares) | (247,000) | (146,781) |
| Units issued, weighted average grant date fair value (in dollars per share) | $ 11.88 | $ 12.89 |
| Units forfeited (in shares) | (2,000) | (39,075) |
| Units forfeited, weighted average grant date fair value (in dollars per share) | $ 21.51 | $ 11.88 |
| Units outstanding, end of fiscal period (in shares) | 283,500 | 532,500 |
| Units outstanding, end of fiscal period, weighted average grant date fair value (in dollars per share) | $ 19.78 | $ 16.12 |
| X | ||||||||||
- Definition The number of issuances made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). No definition available.
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| X | ||||||||||
- Definition Represents the weighted average grant date fair value of equity instruments other than options issued during the period. No definition available.
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| X | ||||||||||
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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