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RELATED-PARTY TRANSACTIONS (Details)
$ / shares in Units, shares in Thousands, $ in Millions
3 Months Ended
Jun. 27, 2017
$ / shares
shares
May 05, 2017
$ / shares
shares
Mar. 27, 2017
$ / shares
shares
Feb. 06, 2017
$ / shares
shares
Jun. 30, 2017
USD ($)
lot
Jun. 30, 2018
lot
Dec. 31, 2017
lot
Related Party Transaction [Line Items]              
Number of home lots (in lots)           26,589 25,921
Class A Common Stock              
Related Party Transaction [Line Items]              
Number of shares | shares 10,000 10,000 10,000 11,500      
Net purchase price per share | $ / shares $ 23.3000 $ 23.1200 $ 20.7800 $ 18.2875      
Contract To Purchase Home Lots | Company Owned And Controlled By A Member Of Board Of Directors              
Related Party Transaction [Line Items]              
Number of home lots (in lots)         140    
Purchase price of home lots | $         $ 30.0