Earnings Per Share - Summary of Calculation of EPS (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Net Income (Loss)	$ 206,622	$ 160,443
Weighted-average common shares outstanding, basic	152,918	155,140
Dilutive effect of nonvested shares	2,201	1,615
Weighted-average common shares outstanding, diluted	155,119	156,755
Anti-dilutive common shares excluded above	5	10
Net earnings per share attributable to Skechers U.S.A., Inc.
Basic	$ 1.35	$ 1.03
Diluted	$ 1.33	$ 1.02