Consolidated Statements of Stockholders' Equity (Parentheticals) - shares	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Statement of Stockholders' Equity [Abstract]
Exercised	29,001	39,711	0
Common Stock, shares issued under Directors' Stock Plan	0	0	0
Common Stock, shares purchased	511,353	20,226	33,112
Restricted Stock, shares issued	0	307,292	60,000
Restricted Stock, shares forfeited	17,784	106,196	4,629
Class B Common Stock converted into Class A Common Stock, shares	2,635	6,250	9,215