Quarterly report pursuant to Section 13 or 15(d)

Derivative Financial Instruments (Details)

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Derivative Financial Instruments (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jul. 02, 2011
Jun. 30, 2012
Jul. 02, 2011
Summary of activity in accumulated other comprehensive income related to derivatives        
Derivative balance at the beginning of the period in AOCI $ (233) $ (288) $ (256) $ (338)
Net deferral in AOCI of derivatives:        
Net (increase) decrease in fair value of derivatives (12) (98) (37) (98)
Tax effect 4 35 14 35
Net deferral in AOCI of derivatives (8) (63) (23) (63)
Net reclassification from AOCI into earnings:        
Reclassification from AOCI into earnings - Interest expense 54 78 114 155
Tax effect (19) (28) (41) (55)
Net reclassification from AOCI into earnings 35 50 73 100
Net change in derivatives for the period 27 (13) 50 37
Derivative balance at the end of the period in AOCI $ (206) $ (301) $ (206) $ (301)