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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, 2020
Dec. 31, 2019
Debt Instrument [Line Items]        
Long-term debt     $ 13,177 $ 13,664
Unsecured Debt | Promissory Note        
Debt Instrument [Line Items]        
Interest rate description     WSJ  
Basis spread on variable rate     0.50%  
Floor     4.75%  
Long-term debt     $ 1,000 1,500
Unsecured Debt | Trust Preferred Security Offering, 2005        
Debt Instrument [Line Items]        
Debt issuance costs, net     140 150
Long-term debt     9,139 9,129
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]        
Debt issuance costs, net     55 58
Long-term debt     $ 3,038 $ 3,035
Unsecured Debt | Trust Preferred Security Offering, 2007 | Three-month LIBOR        
Debt Instrument [Line Items]        
Basis spread on variable rate 3.40%