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Segment Reporting - Summary of Product Categories as a Percentage of Merchandise Sales (Detail)
 12 Months Ended
Jan. 31, 2015
Feb. 01, 2014
Feb. 02, 2013
Revenue from External Customer [Line Items]      
Product categories as a percentage of merchandise sales 100.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales 100.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales 100.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
Men's apparel [Member]      
Revenue from External Customer [Line Items]      
Product categories as a percentage of merchandise sales 34.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
/ us-gaap_ProductOrServiceAxis
= zumz_MensApparelMember		 34.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
/ us-gaap_ProductOrServiceAxis
= zumz_MensApparelMember		 36.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
/ us-gaap_ProductOrServiceAxis
= zumz_MensApparelMember
Accessories [Member]      
Revenue from External Customer [Line Items]      
Product categories as a percentage of merchandise sales 20.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
/ us-gaap_ProductOrServiceAxis
= zumz_AccessoriesMember		 19.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
/ us-gaap_ProductOrServiceAxis
= zumz_AccessoriesMember		 19.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
/ us-gaap_ProductOrServiceAxis
= zumz_AccessoriesMember
Footwear [Member]      
Revenue from External Customer [Line Items]      
Product categories as a percentage of merchandise sales 19.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
/ us-gaap_ProductOrServiceAxis
= zumz_FootwearMember		 22.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
/ us-gaap_ProductOrServiceAxis
= zumz_FootwearMember		 23.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
/ us-gaap_ProductOrServiceAxis
= zumz_FootwearMember
Hardgoods [Member]      
Revenue from External Customer [Line Items]      
Product categories as a percentage of merchandise sales 14.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
/ us-gaap_ProductOrServiceAxis
= zumz_HardgoodsMember		 13.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
/ us-gaap_ProductOrServiceAxis
= zumz_HardgoodsMember		 11.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
/ us-gaap_ProductOrServiceAxis
= zumz_HardgoodsMember
Junior's apparel [Member]      
Revenue from External Customer [Line Items]      
Product categories as a percentage of merchandise sales 13.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
/ us-gaap_ProductOrServiceAxis
= zumz_JuniorsApparelMember		 12.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
/ us-gaap_ProductOrServiceAxis
= zumz_JuniorsApparelMember		 11.00%zumz_ProductCategoriesAsPercentageOfMerchandiseSales
/ us-gaap_ProductOrServiceAxis
= zumz_JuniorsApparelMember