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Net Income Per Share (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jul. 03, 2021
Apr. 03, 2021
Jun. 27, 2020
Mar. 28, 2020
Jul. 03, 2021
Jun. 27, 2020
Net Income (Loss) Available to Common Stockholders, Diluted [Abstract]            
Net income $ 11,566 $ 10,501 $ 5,931 $ 6,468 $ 22,067 $ 12,399
Less: net income attributable to participating shares 51   22   97 49
Net income available to common shareholders $ 11,515   $ 5,909   $ 21,970 $ 12,350
Reconciliation of basic to diluted weighted average shares of common stock outstanding            
Basic weighted average shares outstanding (in shares) 7,320,000   7,764,000   7,473,000 7,784,000
Dilutive stock options and restricted stock units (in shares) 219,000   156,000   212,000 195,000
Diluted weighted average shares outstanding (in shares) 7,539,000   7,920,000   7,685,000 7,979,000
Calculation of common stock equivalents for purposes of computing diluted weighted average shares outstanding            
Anti-dilutive securities excluded from EPS computation (in shares) 0   106,018   0 44,069