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Quarterly Data (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Feb. 28, 2015
Nov. 29, 2014
Aug. 30, 2014
May 31, 2014
Mar. 01, 2014
Nov. 30, 2013
Aug. 31, 2013
Jun. 01, 2013
Feb. 28, 2015
Mar. 01, 2014
Mar. 02, 2013
Quarterly Financial Information Disclosure [Abstract]                      
Net sales $ 246,698us-gaap_SalesRevenueNet $ 244,410us-gaap_SalesRevenueNet $ 231,945us-gaap_SalesRevenueNet $ 210,883us-gaap_SalesRevenueNet $ 214,417us-gaap_SalesRevenueNet $ 199,430us-gaap_SalesRevenueNet $ 178,287us-gaap_SalesRevenueNet $ 179,311us-gaap_SalesRevenueNet $ 933,936us-gaap_SalesRevenueNet $ 771,445us-gaap_SalesRevenueNet $ 700,224us-gaap_SalesRevenueNet
Gross profit 61,132us-gaap_GrossProfit 56,653us-gaap_GrossProfit 49,321us-gaap_GrossProfit 41,438us-gaap_GrossProfit 46,943us-gaap_GrossProfit 43,388us-gaap_GrossProfit 38,535us-gaap_GrossProfit 36,386us-gaap_GrossProfit 208,544us-gaap_GrossProfit 165,252us-gaap_GrossProfit 145,733us-gaap_GrossProfit
Net earnings $ 13,887us-gaap_NetIncomeLoss $ 13,736us-gaap_NetIncomeLoss $ 16,791us-gaap_NetIncomeLoss $ 6,102us-gaap_NetIncomeLoss $ 8,038us-gaap_NetIncomeLoss $ 9,668us-gaap_NetIncomeLoss $ 6,121us-gaap_NetIncomeLoss $ 4,159us-gaap_NetIncomeLoss $ 50,516us-gaap_NetIncomeLoss $ 27,986us-gaap_NetIncomeLoss $ 19,111us-gaap_NetIncomeLoss
Earnings per share - basic                      
Earnings per share - basic $ 0.49us-gaap_EarningsPerShareBasic $ 0.47us-gaap_EarningsPerShareBasic $ 0.59us-gaap_EarningsPerShareBasic $ 0.21us-gaap_EarningsPerShareBasic $ 0.28us-gaap_EarningsPerShareBasic $ 0.34us-gaap_EarningsPerShareBasic $ 0.21us-gaap_EarningsPerShareBasic $ 0.15us-gaap_EarningsPerShareBasic $ 1.76us-gaap_EarningsPerShareBasic $ 0.98us-gaap_EarningsPerShareBasic $ 0.68us-gaap_EarningsPerShareBasic
Earnings per share - diluted                      
Earnings per share - diluted $ 0.47us-gaap_EarningsPerShareDiluted $ 0.47us-gaap_EarningsPerShareDiluted $ 0.57us-gaap_EarningsPerShareDiluted $ 0.21us-gaap_EarningsPerShareDiluted $ 0.27us-gaap_EarningsPerShareDiluted $ 0.33us-gaap_EarningsPerShareDiluted $ 0.21us-gaap_EarningsPerShareDiluted $ 0.14us-gaap_EarningsPerShareDiluted $ 1.72us-gaap_EarningsPerShareDiluted $ 0.95us-gaap_EarningsPerShareDiluted $ 0.67us-gaap_EarningsPerShareDiluted