Earnings per Common Share	9 Months Ended
	Sep. 26, 2020
Earnings Per Share [Abstract]
Earnings per Common Share	Earnings per Common ShareBasic per share amounts have been computed based on the average number of common shares outstanding.  Diluted per share amounts reflect the increase in average common shares outstanding that would result from the assumed exercise of outstanding stock options and vesting of restricted stock awards, computed using the treasury stock method. Approximately three thousand and 110 thousand stock-based awards were excluded from the computation of diluted earnings per share for the quarters ended September 26, 2020 and September 28, 2019, respectively, because they were antidilutive.