Note 7 - Net Income (Loss) Per Common and Common Equivalent Share (Details Textual) - shares	3 Months Ended
Mar. 28, 2026	Mar. 29, 2025
Weighted Average Number of Shares Outstanding, Diluted, Adjustment	0	17,951
Scenario, Plan [Member]
Weighted Average Number of Shares Outstanding, Diluted, Adjustment	364,994

The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

Name:	us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration