Annual report pursuant to Section 13 and 15(d)

Summary of Quarterly Financial Information - Summary of Unaudited Financial Data (Detail)

v3.10.0.1
Summary of Quarterly Financial Information - Summary of Unaudited Financial Data (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Statement [Abstract]                      
Net sales $ 1,080,798 $ 1,176,395 $ 1,134,797 $ 1,250,078 $ 970,589 $ 1,094,829 $ 1,025,934 $ 1,072,808 $ 4,642,068 $ 4,164,160 $ 3,563,311
Gross profit 515,678 563,866 560,957 583,104 454,083 519,987 488,321 476,498 2,223,605 1,938,889 1,634,596
Net earnings (loss) 67,105 106,051 60,859 137,258 (51,761) 106,830 73,400 106,635 371,273 235,104 285,359
Net earnings (loss) attributable to Skechers U.S.A., Inc. $ 47,377 $ 90,728 $ 45,284 $ 117,652 $ (66,650) $ 92,310 $ 59,535 $ 93,995 $ 301,041 $ 179,190 $ 243,493
Net earnings (loss) per share:                      
Basic $ 0.31 $ 0.58 $ 0.29 $ 0.21 $ (0.43) $ 0.59 $ 0.38 $ 0.61 $ 1.93 $ 1.15 $ 1.58
Diluted $ 0.31 $ 0.58 $ 0.29 $ 0.21 $ (0.43) $ 0.59 $ 0.38 $ 0.60 $ 1.92 $ 1.14 $ 1.57