Net Income Per Share (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2021	Mar. 28, 2020
Net Income (Loss) Available to Common Stockholders, Diluted [Abstract]
Net income	$ 10,501	$ 6,468
Less: net income attributable to participating shares	46	26
Net income available to common shareholders	$ 10,455	$ 6,442
Reconciliation of basic to diluted weighted average shares of common stock outstanding
Basic weighted average shares outstanding (in shares)	7,626,000	7,805,000
Dilutive stock options and restricted stock units (in shares)	205,000	232,000
Diluted weighted average shares outstanding (in shares)	7,831,000	8,037,000
Calculation of common stock equivalents for purposes of computing diluted weighted average shares outstanding
Anti-dilutive securities excluded from EPS computation (in shares)	13,826,000	73,647,000