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Earnings Per Share (Details) (USD $)
In Thousands, except Share data
3 Months Ended12 Months Ended
Oct. 01, 2011
Jul. 02, 2011
Apr. 02, 2011
Jan. 01, 2011
Oct. 02, 2010
Jul. 03, 2010
Apr. 03, 2010
Jan. 02, 2010
Oct. 01, 2011
Oct. 02, 2010
Oct. 03, 2009
Net income$ 18,323$ 22,040$ 23,860$ 25,033$ 26,607$ 24,368$ 20,714$ 17,844$ 89,256$ 89,533$ 46,327
Basic weighted average common shares outstanding        38,063,00040,051,00039,411,000
Dilutive effect of stock options        737,000780,000243,000
Diluted weighted average shares outstanding        38,800,00040,831,00039,654,000
Basic$ 0.53$ 0.60$ 0.60$ 0.62$ 0.66$ 0.60$ 0.52$ 0.45$ 2.34$ 2.24$ 1.18
Diluted$ 0.52$ 0.58$ 0.59$ 0.61$ 0.65$ 0.59$ 0.51$ 0.44$ 2.30$ 2.19$ 1.17
Stock Appreciation Rights (SARs) [Member]
           
Antidilutive securities excluded from computation of diluted earnings per share        1,300,0001,200,0002,700,000
Restricted Stock Units (RSUs) [Member]
           
Antidilutive securities excluded from computation of diluted earnings per share          20,000