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INCOME TAXES (Tax Credit Carryforwards) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Operating loss carryforwards    
Net deferred tax assets $ 21,538,000 $ 26,493,000
Valuation allowance 3,461,000 3,321,000
Valuation allowance, increase (decrease) 100,000 $ 600,000
Unrecognized tax benefits that, if recognized would favorably affect the effective income tax rate 0  
State | CALIFORNIA    
Operating loss carryforwards    
Valuation allowance 3,300,000  
Net operating loss carryforwards 38,400,000  
State | HAWAII    
Operating loss carryforwards    
Capital loss carryforwards 4,900,000  
Valuation allowance 200,000  
Tax credit carryforwards that do not expire $ 10,600,000