Quarterly report pursuant to Section 13 or 15(d)

General - Additional Information (Detail)

v3.20.2
General - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Apr. 01, 2019
Jun. 30, 2019
Sep. 30, 2019
Sep. 30, 2020
Dec. 31, 2019
Apr. 30, 2019
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]            
Consideration paid, net of cash acquired     $ 100,658      
ASU 2016-13 [Member]            
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]            
Change in accounting principle, accounting standards update, adopted       true    
Change in accounting principle, accounting standards update, adoption date       Jan. 01, 2020    
Change in accounting principle, accounting standards update, immaterial effect       true    
ASU 2018-13 [Member]            
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]            
Change in accounting principle, accounting standards update, adopted       true    
Change in accounting principle, accounting standards update, adoption date       Jan. 01, 2020    
Change in accounting principle, accounting standards update, immaterial effect       true    
ASU 2018-15 [Member]            
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]            
Change in accounting principle, accounting standards update, adopted       true    
Change in accounting principle, accounting standards update, adoption date       Jan. 01, 2020    
Change in accounting principle, accounting standards update, immaterial effect       true    
Skechers Mexico [Member]            
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]            
Ownership interest in joint venture 60.00% 60.00%       60.00%
Consideration paid, net of cash acquired $ 120,600 $ 120,600        
Sales Returns and Allowances [Member]            
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]            
Sales returns liability       $ 96,300 $ 86,500