Consolidated Statements of Stockholders' Equity Parenthetical - shares	3 Months Ended
	Jun. 27, 2020	Mar. 28, 2020	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019
Statement of Stockholders' Equity [Abstract]
Common stock, shares issued under Directors' Stock Plan				29,001
Common stock, shares purchased	(3,460)	(176,477)			(11,299)
Restricted stock, shares issued		131,867
Restricted stock, shares forfeited			(11,103)		(6,681)
Class B common stock converted into class A common stock, shares					2,635