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Business Acquisition - Bonterra (Details)
$ in Thousands
12 Months Ended
Jul. 01, 2015
USD ($)
item
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Business Acquisitions      
Contingent consideration (earn-out)   $ 2,400 $ 7,083
Bonterra Builders, LLC      
Business Acquisitions      
Acquisition price $ 99,759 3,300  
Contingent consideration (earn-out) 5,700    
Contingent consideration payments   $ 400  
Consideration held as security $ 800    
Number of primary residential lots | item 1,700    
Earn-out | Bonterra Builders, LLC      
Business Acquisitions      
Liabilities incurred $ 6,000