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

Leases - Additional Information (Detail) $ in Thousands	Sep. 30, 2019 USD ($)
Operating Leased Assets [Line Items]
Operating lease liabilities	$ 172,947
Operating lease right-of-use assets	$ 985,001
Minimum [Member]
Operating Leased Assets [Line Items]
Lease term	1 year
Maximum [Member]
Operating Leased Assets [Line Items]
Lease term	10 years
Retail Stores Leases [Member]
Operating Leased Assets [Line Items]
Operating lease right-of-use assets	$ 2,700
Retail Stores Leases [Member] \| Minimum [Member]
Operating Leased Assets [Line Items]
Lease term	5 years
Retail Stores Leases [Member] \| Maximum [Member]
Operating Leased Assets [Line Items]
Lease term	10 years
Other Real Estate or Facility Leases [Member] \| Maximum [Member]
Operating Leased Assets [Line Items]
Lease term	20 years