Note 7 - Capital Stock - Common Shares Issued and Outstanding (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |||||
|---|---|---|---|---|---|---|---|
Sep. 29, 2019 |
Sep. 30, 2018 |
Sep. 29, 2019 |
Sep. 30, 2018 |
||||
| New share issuance - rights offering and registered direct offering | $ 12,587 | $ 14,044 | $ 12,587 | ||||
| New share issuance - vested stock awards | $ 46 | 46 | $ 361 | ||||
| Treasury stock | $ (75) | $ (75) | |||||
| Common Stock [Member] | |||||||
| Balance (in shares) | 23,189,381 | ||||||
| Balance | $ 458 | ||||||
| New share issuance - rights offering and registered direct offering (in shares) | 5,777,768 | 4,642,030 | 5,777,768 | ||||
| New share issuance - rights offering and registered direct offering | $ 58 | $ 46 | $ 58 | ||||
| New share issuance - vested stock awards (in shares) | 87,386 | 267,063 | 310,883 | ||||
| New share issuance - vested stock awards | $ 1 | $ 3 | $ 3 | ||||
| Treasury stock (in shares) | 21,264 | 21,264 | [1] | ||||
| Treasury stock | |||||||
| Balance (in shares) | 28,119,738 | 28,119,738 | |||||
| Balance | $ 507 | $ 507 | |||||
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| X | ||||||||||
- Definition Amount of decrease to equity for grantee's tax withholding obligation for award under share-based payment arrangement. No definition available.
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| X | ||||||||||
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Value of all classes of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares exclude common shares repurchased by the entity and held as treasury shares. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement. No definition available.
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| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number, before forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP). No definition available.
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| X | ||||||||||
- Definition Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Aggregate value of stock related to Restricted Stock Awards issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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