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Business Combination (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Apr. 26, 2018
Business Acquisition [Line Items]        
Payment for Contingent Consideration Liability, Investing Activities $ 1,800      
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount 10,295   $ 8,531  
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest 644      
Noncontrolling Interest, Change in Redemption Value 1,120      
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low 1,400      
Assets acquired        
Goodwill 680   $ 680  
Liabilities assumed        
Contingent consideration 3,700      
Homebuilding revenues 168,628 $ 129,163    
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest $ 15,319 $ 16,611    
GHO Homes        
Liabilities assumed        
Percent of equity interests acquired       80.00%
GHO Homes | Previous Owner of GHO Homes        
Liabilities assumed        
Ownership percentage by noncontrolling owners 20.00%      
Florida Based Controlled Builder [Member]        
Liabilities assumed        
Percent of equity interests acquired 80.00%