Note 6 - Capital Stock (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Apr. 01, 2018 |
Apr. 02, 2017 |
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | 335,929 | |
| Adjustments to Additional Paid in Capital, Share-based Compensation, Stock Options, Requisite Service Period Recognition | $ 25 | $ 12 |
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | 0 | |
| Restricted Stock Units (RSUs) [Member] | ||
| Allocated Share-based Compensation Expense, Total | $ 101 | 191 |
| Employee Stock Option [Member] | ||
| Allocated Share-based Compensation Expense, Total | $ 25 | $ 12 |
| X | ||||||||||
- Definition Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation for stock options. No definition available.
|
| X | ||||||||||
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| 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
|
| X | ||||||||||
- Definition Gross number of share options (or share units) granted during the period. No definition available.
|
| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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