Reconciliation of Numerators and Denominators used in Computing Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Sep. 01, 2012		Aug. 27, 2011		Sep. 01, 2012		Aug. 27, 2011
Earnings Per Share Disclosure [Line Items]
Net income attributable to The Finish Line, Inc.	$ 24,973		$ 20,920		$ 37,251		$ 37,336
Net income attributable to participating securities	202		169		300		298
Net income available to The Finish Line, Inc. shareholders	$ 24,771		$ 20,751		$ 36,951		$ 37,038
Basic earnings per share:
Weighted-average number of common shares outstanding	50,188		52,357		50,441		52,732
Basic earnings per share	$ 0.49		$ 0.40		$ 0.73		$ 0.70
Diluted earnings per share:
Weighted-average number of common shares outstanding	50,188		52,357		50,441		52,732
Stock options	678	[1]	786	[1]	694	[1]	841	[1]
Diluted weighted-average number of common shares outstanding	50,866		53,143		51,135		53,573
Diluted earnings per share	$ 0.49		$ 0.39		$ 0.72		$ 0.69

[1] The computation of diluted earnings per share excludes options to purchase approximately 0.9 million and 0.4 million shares of common stock in the thirteen weeks ended September 1, 2012 and August 27, 2011, respectively, and 0.8 million and 0.4 million shares of common stock in the twenty-six weeks ended September 1, 2012 and August 27, 2011, respectively, because the impact of such options would have been anti-dilutive