Annual report pursuant to Section 13 and 15(d)

The Company and Summary of Significant Accounting Policies - Additional Information (Detail)

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The Company and Summary of Significant Accounting Policies - Additional Information (Detail)
 3 Months Ended 12 Months Ended
Jun. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Store
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]        
Cash consideration paid, net of cash acquired   $ 100,658,000    
Derivative effective dates   Aug. 12, 2015    
Impairment charges   $ 0 $ 0 $ 0
Goodwill impairment loss   0    
Advertising expense   297,100,000 278,400,000 260,400,000
Prepaid advertising costs   6,400,000 4,400,000  
Product design and development costs   16,800,000 18,500,000 18,800,000
Warehouse and distribution costs   276,400,000 249,600,000 $ 219,600,000
Skechers Mexico [Member]        
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]        
Ownership interest in joint venture 60.00%      
Cash consideration paid, net of cash acquired $ 100,700,000      
Sales Returns and Allowances [Member]        
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]        
Sales returns liability   $ 86,500,000 $ 67,300,000  
Domestic [Member]        
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]        
Number of operating retail stores | Store   497    
International [Member]        
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]        
Number of operating retail stores | Store   303