v3.10.0.1
Document and Entity Information
6 Months Ended
Jun. 30, 2018
shares
Document and Entity Information [Abstract]  
Entity Registrant Name UNIVERSAL FOREST PRODUCTS INC
Entity Central Index Key 0000912767
Current Fiscal Year End Date --12-29
Entity Filer Category Large Accelerated Filer
Entity Common Stock, Shares Outstanding (in shares) 61,632,401
Entity Current Reporting Status Yes
Document Fiscal Year Focus 2018
Document Fiscal Period Focus Q2
Document Type 10-Q
Amendment Flag false
Document Period End Date Jun. 30, 2018