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, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Net Sales
Net sales, Total	$ 1,094,829	$ 942,417	$ 3,193,571	$ 2,799,021
Property, plant and equipment, net
Property, plant and equipment, net	532,482		532,482		$ 494,473
Domestic [Member]
Net Sales
Net sales, Total	514,235	491,123	1,595,078	1,513,261
Property, plant and equipment, net
Property, plant and equipment, net	378,272		378,272		374,459
Canada [Member]
Net Sales
Net sales, Total	46,979	39,306	133,362	110,807
Property, plant and equipment, net
Property, plant and equipment, net	10,472		10,472		10,410
Other international [Member]
Net Sales
Net sales, Total	533,615	$ 411,988	1,465,131	$ 1,174,953
Property, plant and equipment, net
Property, plant and equipment, net	$ 143,738		$ 143,738		$ 109,604