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OTHER ASSETS (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Mar. 31, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Oct. 11, 2019
Sep. 19, 2019
Dec. 31, 2018
Derivative Asset, Noncurrent $ 574     $ 574       $ 5,797
Debt issue costs 2,190     2,190        
Interest expense, debt 1,207   $ 1,166 3,613 $ 3,353      
Impairment losses recognized 0   0 0 0      
Revolving Credit Facility [Member]                
Debt issuance costs, gross             $ 2,200  
Interest expense, debt 100              
Unamortized debt issue costs 2,200     $ 2,200        
Debt instrument, term       3 years        
Revolving Credit Facility [Member] | Subsidiaries [Member]                
Line of credit facility, maximum borrowing capacity             70,000  
Revolving Credit Facility [Member] | Facility Amount [Member] | Subsidiaries [Member]                
Line of credit facility, maximum borrowing capacity             125,000  
Revolving Credit Facility [Member] | Committed Amount [Member] | Subsidiaries [Member]                
Line of credit facility, maximum borrowing capacity             $ 70,000  
Revolving Credit Facility [Member] | Committed Amount [Member] | Subsequent Event [Member]                
Line of credit facility, maximum borrowing capacity           $ 100,000    
Building [Member]                
Property, Plant and Equipment, Useful Life       40 years        
Land improvements                
Property, Plant and Equipment, Useful Life       15 years        
Land investment   $ 4,400            
Depreciation $ 0   $ 0 $ 0 $ 0      
Minimum [Member] | Furniture and Fixtures [Member]                
Property, Plant and Equipment, Useful Life       6 years        
Maximum [Member] | Furniture and Fixtures [Member]                
Property, Plant and Equipment, Useful Life       7 years