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Computation of Basic and Diluted Net (Loss) Income Per Common Share (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jul. 02, 2011
Jun. 30, 2012
Jul. 02, 2011
Numerator:        
Income from continuing operations $ 397 $ 899 $ 132 $ 1,084
Less income from discontinued operations (61) 10 1,809 391
Net income $ 336 $ 909 $ 1,941 $ 1,475
Denominator:        
Weighted average shares of common stock (basic) 8,983 8,961 8,958 8,962
Effect of dilutive preferred shares 1,000 1,000 1,000 1,000
Effect of dilutive stock options 262 258 277 249
Effect of dilutive contingent shares 41 12 35 12
Weighted average shares of common stock (diluted) 10,286 10,231 10,270 10,223
Basic income per share:        
Income before discontinued operations $ 0.04 $ 0.10 $ 0.01 $ 0.12
Discontinued operations $ 0.00 $ 0.00 $ 0.21 $ 0.04
Net income $ 0.04 $ 0.10 $ 0.22 $ 0.16
Diluted (loss) income per share:        
Income before discontinued operations $ 0.04 $ 0.09 $ 0.01 $ 0.10
Discontinued operations $ (0.01) $ 0.00 $ 0.18 $ 0.04
Net income $ 0.03 $ 0.09 $ 0.19 $ 0.14