Annual report pursuant to Section 13 and 15(d)

Earnings Per Share Earnings Per Share (Details)

v2.4.1.9
Earnings Per Share Earnings Per Share (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 27, 2014
Sep. 27, 2014
Jun. 28, 2014
Mar. 29, 2014
Dec. 28, 2013
Sep. 28, 2013
Jun. 29, 2013
Mar. 30, 2013
Dec. 27, 2014
Dec. 28, 2013
Dec. 29, 2012
Earnings Per Share [Abstract]                      
Net income $ 10,327us-gaap_NetIncomeLoss $ 9,877us-gaap_NetIncomeLoss $ 12,186us-gaap_NetIncomeLoss $ 11,385us-gaap_NetIncomeLoss $ 8,343us-gaap_NetIncomeLoss $ 8,275us-gaap_NetIncomeLoss $ 11,790us-gaap_NetIncomeLoss $ 9,575us-gaap_NetIncomeLoss $ 43,775us-gaap_NetIncomeLoss $ 37,984us-gaap_NetIncomeLoss $ 37,398us-gaap_NetIncomeLoss
Basic weighted average number of common shares outstanding                 26,456us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 26,206us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 25,944us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Basic net income per common share $ 0.39us-gaap_EarningsPerShareBasic $ 0.37us-gaap_EarningsPerShareBasic $ 0.46us-gaap_EarningsPerShareBasic $ 0.43us-gaap_EarningsPerShareBasic $ 0.32us-gaap_EarningsPerShareBasic $ 0.32us-gaap_EarningsPerShareBasic $ 0.45us-gaap_EarningsPerShareBasic $ 0.37us-gaap_EarningsPerShareBasic $ 1.65us-gaap_EarningsPerShareBasic $ 1.45us-gaap_EarningsPerShareBasic $ 1.44us-gaap_EarningsPerShareBasic
Effect of dilutive stock options and deferred director stock units                 0us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 0us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements 0us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Diluted weighted average number of common shares outstanding                 26,456us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 26,206us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 25,971us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Diluted net income per common share $ 0.39us-gaap_EarningsPerShareDiluted $ 0.37us-gaap_EarningsPerShareDiluted $ 0.46us-gaap_EarningsPerShareDiluted $ 0.43us-gaap_EarningsPerShareDiluted $ 0.32us-gaap_EarningsPerShareDiluted $ 0.32us-gaap_EarningsPerShareDiluted $ 0.45us-gaap_EarningsPerShareDiluted $ 0.37us-gaap_EarningsPerShareDiluted $ 1.65us-gaap_EarningsPerShareDiluted $ 1.45us-gaap_EarningsPerShareDiluted $ 1.44us-gaap_EarningsPerShareDiluted