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Note 8 - Income Per Share - Computation Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended
	Feb. 03, 2018	Jan. 28, 2017	May 05, 2018	Apr. 29, 2017
Net income (loss) before allocation of earnings to participating securities	$ (845)	$ (760)	$ 354	$ 2,629
Less: Earnings allocated to participating securities			2	60
Net income (loss)	$ (845)		$ 352	$ 2,569
Weighted average number of common shares outstanding - basic (in shares)	14,860,511		14,582,573	15,561,804
Dilutive effect of share-based awards: (in shares)			140,416	133,518
Weighted average number of common shares outstanding - dilutive (in shares)	14,860,511		14,722,989	15,695,322
Basic income (loss) per common share attributable to Build-A-Bear Workshop, Inc. stockholders (in dollars per share)	$ (0.06)		$ 0.02	$ 0.17
Diluted income (loss) per common share attributable to Build-A-Bear Workshop, Inc. stockholders (in dollars per share)	$ (0.06)		$ 0.02	$ 0.16

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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