Quarterly report pursuant to Section 13 or 15(d)

Common Stock And Earnings Per Share (Schedule Of Common Stock And Earnings Per Share) (Details)

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Common Stock And Earnings Per Share (Schedule Of Common Stock And Earnings Per Share) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended
Apr. 04, 2015
Mar. 29, 2014
Common Stock And Earnings Per Share [Abstract]    
Net earnings available to common shareholders $ 19,680us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic $ 16,537us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Weighted average common shares outstanding during period - basic 12,648us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 13,919us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Dilutive effect of in-the-money equity awards 437us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 476us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Weighted average common shares outstanding during period - diluted 13,085us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 14,395us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Earnings per common share from net earnings - basic $ 1.56us-gaap_EarningsPerShareBasic $ 1.19us-gaap_EarningsPerShareBasic
Earnings per common share from net earnings - diluted $ 1.50us-gaap_EarningsPerShareDiluted $ 1.15us-gaap_EarningsPerShareDiluted
Equity awards for the following shares were not included in the their effect would be anti-dilutive: 125us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 273us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount