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FAIR VALUE OF FINANCIAL INSTRUMENTS (Level 3 Securities) (Details) - Recurring - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Continuing Operations    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance $ 1,595  
Unrealized gains (losses) 176  
Ending Balance 1,771 $ 1,595
Continuing Operations | Corporate bonds    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance 250  
Unrealized gains (losses) 0  
Ending Balance 250 250
Continuing Operations | Asset-backed securities    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance 750  
Unrealized gains (losses) 176  
Ending Balance 926 750
Continuing Operations | Equities    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance 595  
Unrealized gains (losses) 0  
Ending Balance 595 595
Continuing and Discontinuing Operations    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance 1,595 1,511
Unrealized gains (losses)   84
Purchases   100
Disposals   (100)
Ending Balance   1,595
Continuing and Discontinuing Operations | Corporate bonds    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance 250 250
Unrealized gains (losses)   0
Purchases   100
Disposals   (100)
Ending Balance   250
Continuing and Discontinuing Operations | Asset-backed securities    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance 750 666
Unrealized gains (losses)   84
Purchases   0
Disposals   0
Ending Balance   750
Continuing and Discontinuing Operations | Equities    
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance $ 595 595
Unrealized gains (losses)   0
Purchases   0
Disposals   0
Ending Balance   $ 595