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Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
 12 Months Ended
Dec. 28, 2016
Dec. 30, 2015
Dec. 31, 2014
Statement of Comprehensive Income [Abstract]      
Net income $ 19,402 $ 35,976 $ 32,725
Other comprehensive income (loss), net of tax:      
Minimum pension liability adjustment, net of tax of $2,148, $1,425 and $(4,019) 21,819 2,230 (6,304)
Recognition of unrealized gain (loss) on hedge transactions, net of tax of $353, $(898) and $(933) 551 (1,405) (1,456)
Other comprehensive income (loss) 22,370 825 (7,760)
Total comprehensive income $ 41,772 $ 36,801 $ 24,965