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Note 9 - Income Per Share - Computation Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Aug. 01, 2020	Jul. 31, 2021	Aug. 01, 2020
Net income (loss)	$ 6,835	$ (13,909)	$ 17,215	$ (35,113)
Weighted average number of common shares outstanding - basic (in shares)	15,398,406	14,999,786	15,230,215	14,936,541
Dilutive effect of share-based awards: (in shares)	713,181	0	728,305	0
Weighted average number of common shares outstanding - dilutive (in shares)	16,111,587	14,999,786	15,958,520	14,936,541
Basic income (loss) per common share attributable to Build-A-Bear Workshop, Inc. stockholders (in dollars per share)	$ 0.44	$ (0.93)	$ 1.13	$ (2.35)
Diluted income (loss) per common share attributable to Build-A-Bear Workshop, Inc. stockholders (in dollars per share)	$ 0.42	$ (0.93)	$ 1.08	$ (2.35)

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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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