Skechers U.S.A., Inc. Quarterly report pursuant to Section 13 or 15(d)

Segment and Geographic Reporting - Geographic Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net sales, Total	$ 1,353,998	$ 1,176,395	$ 3,889,319	$ 3,561,270
Property, plant and equipment, net
Property, plant and equipment, net	702,545		702,545		$ 585,457
Domestic [Member]
Segment Reporting Information [Line Items]
Net sales, Total	558,173	523,281	1,655,413	1,648,642
Property, plant and equipment, net
Property, plant and equipment, net	434,687		434,687		385,584
Canada [Member]
Segment Reporting Information [Line Items]
Net sales, Total	46,576	44,646	138,900	146,080
Property, plant and equipment, net
Property, plant and equipment, net	7,549		7,549		9,081
Other international [Member]
Segment Reporting Information [Line Items]
Net sales, Total	749,249	$ 608,468	2,095,006	$ 1,766,548
Property, plant and equipment, net
Property, plant and equipment, net	$ 260,309		$ 260,309		$ 190,792