Computation of (Loss) Earnings per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Net (loss) earnings allocable to common shares, basic and diluted (numerator):
Net (loss) income		$ (14,227)	$ 37,877	$ (20,658)	$ 33,280
Less: Dividends to other-than-common stockholders	[1]	0	0	19	5
Net (loss) earnings allocable to common shares, basic		(14,227)	37,877	(20,677)	33,275
Net (loss) earnings allocable to common shares, diluted		$ (14,227)	$ 37,877	$ (20,677)	$ 33,275
Weighted-average shares (denominator):
Weighted-average shares for basic EPS (in shares)		24,103	24,028	24,084	24,005
Dilutive effect of shares issuable under share-based compensation plans (in shares)		0	72	0	71
Weighted-average shares for diluted EPS (in shares)		24,103	24,100	24,084	24,076
Weighted-average shares excluded from diluted EPS (in shares)		62	0	73	0
Basic (loss) earnings per common share attributable to Madison Square Garden Sports Corp.’s stockholders (in USD per share)		$ (0.59)	$ 1.58	$ (0.86)	$ 1.39
Diluted (loss) earnings per common share attributable to Madison Square Garden Sports Corp.’s stockholders (in USD per share)		$ (0.59)	$ 1.57	$ (0.86)	$ 1.38

[1] Dividends to other-than-common stockholders consists of forfeitable rights to dividends declared and payable to holders of the Company’s unvested restricted stock units and performance restricted stock units.