Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Mar. 20, 2018
Jun. 30, 2017
Entity Registrant Name Legacy Acquisition Corp.    
Entity Central Index Key 0001698113    
Trading Symbol lgc    
Amendment Flag false    
Document Type 10-K    
Document Period End Date Dec. 31, 2017    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2017    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 0
Class A Common stock      
Entity Common Stock, Shares Outstanding   30,000,000  
Class F Common Stock      
Entity Common Stock, Shares Outstanding   7,500,000