21. Shareholders' Equity (Details - Option activity) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Mar. 30, 2019 |
Dec. 29, 2018 |
Dec. 30, 2017 |
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] | |||
| Options outstanding, beginning balance | 101 | 125 | |
| Options granted | 0 | 0 | |
| Options exercised | 0 | 0 | |
| Options cancelled/expired | 0 | (24) | |
| Options forfeited | 0 | 0 | |
| Options outstanding, ending balance | 101 | 101 | 125 |
| Weighted Average Exercise Price | |||
| Weighted average exercise price, beginning | $ 11.08 | $ 12.8 | |
| Weighted average exercise price, expired | 19.9 | ||
| Weighted average exercise price, ending | $ 11.07 | $ 11.08 | $ 12.8 |
| Aggregate intrinsic value, options outstanding | $ 0 | $ 0 | |
| Weighted average remaining contractual life | 3 years 7 months 6 days | 3 years 10 months 3 days | 4 years 2 months 19 days |
| X | ||||||||||
- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Gross number of share options (or share units) granted during the period. No definition available.
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| X | ||||||||||
- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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| X | ||||||||||
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired. No definition available.
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| X | ||||||||||
- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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