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NOTES PAYABLE AND LONG-TERM DEBT (Schedule of Long-Term Debt) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 21, 2007
Dec. 15, 2005
Dec. 31, 2019
Dec. 31, 2018
Debt Instrument [Line Items]        
Long-term debt     $ 13,664 $ 12,152
Unsecured Debt | Promissory Note        
Debt Instrument [Line Items]        
Long-term debt     1,500 0
Unsecured Debt | Trust Preferred Security Offering, 2005        
Debt Instrument [Line Items]        
Long-term debt     $ 9,129 9,120
Payment terms     Interest payments due quarterly  
Debt issuance costs, net     $ 150 159
Unsecured Debt | Trust Preferred Security Offering, 2005 | Three-month LIBOR        
Debt Instrument [Line Items]        
Basis spread on variable rate   3.75%    
Unsecured Debt | Trust Preferred Security Offering, 2007        
Debt Instrument [Line Items]        
Long-term debt     $ 3,035 3,032
Payment terms     Interest payments due quarterly  
Debt issuance costs, net     $ 58 $ 61
Unsecured Debt | Trust Preferred Security Offering, 2007 | Three-month LIBOR        
Debt Instrument [Line Items]        
Basis spread on variable rate 3.40%