Net Income Per Common Share (Reconciliation of Basic and Diluted Weighted Average Shares) (Details) - shares	3 Months Ended		9 Months Ended
	Oct. 01, 2021	Sep. 25, 2020	Oct. 01, 2021	Sep. 25, 2020
Earnings Per Share [Abstract]
Basic weighted average common shares outstanding	29,813,530	30,053,457	30,038,249	29,985,879
Unvested restricted stock units and common stock subject to vesting requirements issued to employees and non-employees	625,680	204,747	460,058	142,223
Common stock issuable upon the exercise of stock options and SARs	2,436,600	2,145,238	2,373,075	2,206,450
Dilutive weighted average common shares outstanding	32,875,810	32,403,442	32,871,382	32,334,552