Note D - Investment in Equity Securities (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended |
|---|---|---|
Apr. 03, 2021 |
Jan. 02, 2021 |
|
| Equity Securities without Readily Determinable Fair Value, Price Adjustment, Cumulative Amount | $ 0 | $ 0 |
| Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount | 0 | 0 |
| Other Assets [Member] | ||
| Equity Securities without Readily Determinable Fair Value, Amount | $ 20,000 | $ 20,000 |
| X | ||||||||||
- Definition Amount of investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of impairment loss on investment in equity security without readily determinable fair value. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of cumulative loss (gain) from price adjustment on investment in equity security for which an observable price change occurred. No definition available.
|
| X | ||||||||||
- Details
|