Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.20.4
Summary of Significant Accounting Policies - Additional Information (Detail)
$ in Thousands
 3 Months Ended 12 Months Ended
Apr. 01, 2019
USD ($)
Mar. 31, 2020
USD ($)
Mar. 31, 2019
USD ($)
Dec. 31, 2020
USD ($)
Derivative
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Summary Of Significant Accounting Policies [Line Items]            
Warehouse and distribution costs       $ 315,800 $ 276,400 $ 249,600
Product design and development costs       17,900 16,800 18,500
Advertising expense       248,700 297,100 278,400
Prepaid advertising costs       3,800 6,400  
Cash consideration paid, net of cash acquired         100,658  
Increase in inventories       (78,632) 171,903 $ 7,212
Goodwill       $ 93,497 71,412  
ASU 2016-13 [Member]            
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]            
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]            
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    
Interest Rate Swap [Member] | Level 2 [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Number of derivative instrument | Derivative       1    
Reacquired Rights [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Amortizable intangible assets, gross carrying value       $ 49,100    
Amortizable intangible assets, accumulated amortization       12,100    
Amortization expense related to amortizable intangible assets       6,900    
Future amortization expense related to amortizable intangible assets, 2021       6,900    
Future amortization expense related to amortizable intangible assets, 2022       6,900    
Future amortization expense related to amortizable intangible assets, 2023       6,900    
Future amortization expense related to amortizable intangible assets, 2024       6,900    
Future amortization expense related to amortizable intangible assets, 2025       $ 6,900    
Weighted-average amortization period for amortizable intangible assets       7 years    
International Wholesale [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Goodwill       $ 91,900    
Domestic Wholesale [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Goodwill       1,600    
Skechers Retail India Private Limited [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Purchase of joint venture     $ 82,900      
Skechers Mexico [Member]            
Summary Of Significant Accounting Policies [Line Items]            
Ownership interest in joint venture 60.00%          
Cash consideration paid, net of cash acquired $ 120,600          
Increase to goodwill   $ 22,100        
Increase to intangible assets   49,100        
Increase to deferred tax liabilities   17,100        
Acquisition-related costs       $ 900    
Total purchase consideration allocated to assets acquired   248,700        
Total purchase consideration liabilities assumed based on their estimated fair values   47,300        
Gain on reacquired rights   13,900        
Increase in amortization expense and accumulated amortization   7,000     5,200  
Increase in inventories   $ 8,000     $ 6,000