Reconciliation of Numerators and Denominators used in Computing Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 25, 2017	Nov. 26, 2016	Aug. 27, 2016	May 28, 2016	Feb. 27, 2016	Nov. 28, 2015	Aug. 29, 2015	May 30, 2015	Feb. 25, 2017	Feb. 27, 2016	Feb. 28, 2015
Earnings Per Share [Abstract]
Net income from continuing operations	$ 12,300	$ (10,589)	$ 23,357	$ 10,088	$ 8,759	$ (19,458)	$ 25,552	$ 14,069	$ 35,156	$ 28,922	$ 89,099
Net income from continuing operations attributable to The Finish Line, Inc. attributable to participating securities									0	347	1,067
Net income attributable to The Finish Line, Inc. available to common shareholders									35,156	28,575	88,032
Net loss from discontinued operations, net of tax	$ (21,771)	$ (29,849)	$ (1,282)	$ (462)	$ (4,723)	$ (2,377)	$ 350	$ (280)	(53,364)	(7,126)	(9,357)
Net loss attributable to redeemable noncontrolling interest of discontinued operations									0	(96)	(2,251)
Net loss from discontinued operations attributable to The Finish Line, Inc. attributable to participating securities									0	(84)	(85)
Net loss from discontinued operations attributable to The Finish Line, Inc. available to shareholders									(53,364)	(6,946)	(7,021)
Net (loss) income attributable to The Finish Line, Inc. available to shareholders									$ (18,208)	$ 21,629	$ 81,011
Basic earnings per share attributable to The Finish Line, Inc. shareholders:
Weighted-average number of common shares outstanding									40,911	44,565	47,268
Basic (loss) earnings from continuing operations per share attributable to The Finish Line, Inc. shareholders (in USD per share)	$ 0.30	$ (0.26)	$ 0.56	$ 0.24	$ 0.20	$ (0.44)	$ 0.56	$ 0.31	$ 0.86	$ 0.64	$ 1.86
Income (loss) from discontinued operations, per basic share (in USD per share)	(0.53)	(0.74)	(0.03)	(0.01)	(0.11)	(0.05)	0.01	(0.01)	(1.31)	(0.15)	(0.15)
Basic (loss) earnings per share attributable to The Finish Line, Inc. shareholders (in USD per share)	(0.23)	(1.00)	0.53	0.23	0.09	(0.49)	0.57	0.30	$ (0.45)	$ 0.49	$ 1.71
Diluted earnings per share attributable to The Finish Line, Inc. shareholders:
Weighted-average number of common shares outstanding									40,911	44,565	47,268
Dilutive effect of potential common shares(a)									456	222	390
Diluted weighted-average number of common shares outstanding									41,367	44,787	47,658
Diluted (loss) earnings from continuing operations per share attributable to The Finish Line, Inc. shareholders (in USD per share)	0.30	(0.26)	0.56	0.24	0.20	(0.44)	0.56	0.30	$ 0.85	$ 0.64	$ 1.85
Income (loss) from discontinued operations, per diluted share (in USD per share)	(0.53)	(0.74)	(0.03)	(0.01)	(0.11)	(0.05)	0.01	0.00	(1.29)	(0.16)	(0.15)
Diluted (loss) earnings per share attributable to The Finish Line, Inc. shareholders (in USD per share)	$ (0.23)	$ (1.00)	$ 0.53	$ 0.23	$ 0.09	$ (0.49)	$ 0.57	$ 0.30	$ (0.44)	$ 0.48	$ 1.70