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NOTES PAYABLE AND SPECIAL ASSESSMENT OBLIGATIONS (Details Textual)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2017
USD ($)
Mar. 31, 2017
USD ($)
Jun. 30, 2016
USD ($)
Dec. 31, 2015
USD ($)
Jun. 30, 2017
USD ($)
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Jun. 30, 2016
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Debt Instrument [Line Items]                  
Interest Expense $ 400   $ 2,300   $ 1,900 $ 4,400      
Notes payable 14,343       14,343   $ 14,046    
Debt discount amortization         397 345      
Interest Payable 298       298   379    
Debt 17,712       17,712        
Payments to acquire real estate               $ 6,800  
Cfd Obligation One [Member]                  
Debt Instrument [Line Items]                  
Debt payments         $ 100   $ 100    
Area of property mortgaged (in acres) | a         171        
Cfd Obligation [Member]                  
Debt Instrument [Line Items]                  
Real estate held-for-sale 5,400       $ 5,400        
Cfd Obligation Two [Member]                  
Debt Instrument [Line Items]                  
Debt payments         $ 100        
Area of property mortgaged (in acres) | a         3.9        
Value of property 1,200       $ 1,200        
Obligations transferred         100        
50 Million Non-recourse Note Payable [Member] | Secured Debt [Member]                  
Debt Instrument [Line Items]                  
Debt amount $ 50,000       $ 50,000        
Stated rate (percentage) 7.25%       7.25%        
5.4 Million Note Payable [Member] | Secured Debt [Member]                  
Debt Instrument [Line Items]                  
Stated rate (percentage)       4.50%       4.50%  
Debt       $ 5,400       $ 5,400  
Loans pledged as collateral       7,200       $ 7,200  
5.9 Million Note Payable [Member] | Secured Debt [Member]                  
Debt Instrument [Line Items]                  
Variable rate (percent)         2.00%     2.00%  
Debt amount $ 0     $ 5,900 $ 0     $ 5,900  
Stated rate (percentage) 5.50%       5.50%        
Community Facility District Bonds [Member]                  
Debt Instrument [Line Items]                  
Debt amount $ 3,700       $ 3,700        
Community Facility District Bonds [Member] | Maximum [Member]                  
Debt Instrument [Line Items]                  
Stated rate (percentage) 6.00%       6.00%        
Community Facility District Bonds [Member] | Minimum [Member]                  
Debt Instrument [Line Items]                  
Stated rate (percentage) 5.00%       5.00%        
Special Assessment Bonds [Member]                  
Debt Instrument [Line Items]                  
Debt amount $ 2,300       $ 2,300        
Special Assessment Bonds [Member] | Maximum [Member]                  
Debt Instrument [Line Items]                  
Stated rate (percentage) 7.50%       7.50%        
Special Assessment Bonds [Member] | Minimum [Member]                  
Debt Instrument [Line Items]                  
Stated rate (percentage) 6.00%       6.00%        
SRE Monarch Lending [Member] | SRE Revolver [Member]                  
Debt Instrument [Line Items]                  
Stated rate (percentage)             0.00%    
Proceeds from line of credit             $ 4,000    
Payments of debt issuance costs             $ 500    
Percentage of proceeds from sale of land             5.00%    
Repayments of debt   $ 200              
Non-Revolving Credit Facility [Member] | SRE Monarch Lending [Member]                  
Debt Instrument [Line Items]                  
Extension fee paid           200      
Non-Revolving Credit Facility [Member] | SRE Monarch Lending [Member] | Unsecured Debt [Member]                  
Debt Instrument [Line Items]                  
Debt amount                 $ 5,000
LIBOR [Member] | 50 Million Non-recourse Note Payable [Member] | Secured Debt [Member]                  
Debt Instrument [Line Items]                  
Variable rate (percent)         6.75%        
Prime Rate [Member] | 5.4 Million Note Payable [Member] | Secured Debt [Member]                  
Debt Instrument [Line Items]                  
Variable rate (percent)       1.25%          
Prime Rate [Member] | 5.9 Million Note Payable [Member] | Secured Debt [Member]                  
Debt Instrument [Line Items]                  
Variable rate (percent)         3.00%     3.00%  
Discontinued Operations [Member]                  
Debt Instrument [Line Items]                  
Interest Expense $ 0   $ 1,000   $ 1,100 $ 2,100      
Discontinued Operations, Held-for-sale [Member]                  
Debt Instrument [Line Items]                  
Special assessment bond 3,269       3,269   $ 3,581    
Discontinued Operations, Held-for-sale [Member] | Community Facility District Bonds [Member]                  
Debt Instrument [Line Items]                  
Special assessment bond 2,919       2,919   3,067    
Discontinued Operations, Held-for-sale [Member] | Special Assessment Bonds [Member]                  
Debt Instrument [Line Items]                  
Special assessment bond $ 350       $ 350   $ 514