Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share (Computation of Basic and Diluted Earnings Per Share)(Details)

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Earnings Per Share (Computation of Basic and Diluted Earnings Per Share)(Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 25, 2012
NUMERATOR:    
Net income $ 2,641 $ 381
Less: liquidation preference and preferred return on series X preferred stock 0 313
Less: undistributed earnings allocated to participating interest 0 66
Net income available to common stockholders 2,641 2
DENOMINATOR:    
Weighted-average common shares outstanding 16,111,286 208,505
Basic net income per common share $ 0.16 $ 0.01
NUMERATOR:    
Net income 2,641 381
Less: liquidation preference and preferred return on series X preferred stock 0 313
Less: undistributed earnings allocated to participating interest 0 4
Net income available to common and participating stockholders $ 2,641 $ 64
DENOMINATOR:    
Weighted-average common shares outstanding 16,111,286 208,505
Dilutive effect of preferred stock conversion 0 10,049,572
Dilutive effect of stock options 465,767 648,728
Weighted-average of diluted shares 16,577,053 10,906,805
Earnings Per Share, Diluted $ 0.16 $ 0.01