Earnings Per Share - Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Diluted earnings per share
Net earnings attributable to Skechers U.S.A., Inc.	$ 66,602	$ 51,123	$ 202,464	$ 116,890
Weighted average common shares outstanding	152,895	151,882	152,677	151,753
Dilutive effect of nonvested shares	1,582	1,072	1,396	993
Weighted average common shares outstanding	154,477	152,954	154,073	152,746
Diluted earnings per share attributable to Skechers U.S.A., Inc.	$ 0.43	$ 0.33	$ 1.31	$ 0.77