Annual report pursuant to Section 13 and 15(d)

Earnings Per Share - Summary of Calculation of EPS (Detail)

v3.20.4
Earnings Per Share - Summary of Calculation of EPS (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Earnings Per Share [Abstract]                      
Net earnings attributable to Skechers U.S.A., Inc. $ 53,282 $ 64,278 $ (68,097) $ 49,101 $ 59,532 $ 103,090 $ 75,180 $ 108,758 $ 98,564 $ 346,560 $ 301,041
Weighted-average common shares outstanding, basic                 154,184 153,392 155,815
Dilutive effect of nonvested shares                 710 759 635
Weighted-average common shares outstanding, diluted                 154,894 154,151 156,450
Anti-dilutive common shares excluded above                 69,060 10,838 352,169
Net earnings attributable to Skechers U.S.A., Inc. per common share:                      
Basic $ 0.34 $ 0.42 $ (0.44) $ 0.32 $ 0.39 $ 0.67 $ 0.49 $ 0.71 $ 0.64 $ 2.26 $ 1.93
Diluted $ 0.34 $ 0.41 $ (0.44) $ 0.32 $ 0.39 $ 0.67 $ 0.49 $ 0.71 $ 0.64 $ 2.25 $ 1.92