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RELATED PARTY TRANSACTIONS (Schedule of Related Party Transactions) (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Jun. 23, 2017
Aug. 05, 2015
Related Party Transaction [Line Items]        
Notes Payable, Related Parties     $ 129,000.0  
Payable to related parties (Note 10) $ 173,000 $ 578,000    
Accrued rent payable 64,000 0    
Director [Member]        
Related Party Transaction [Line Items]        
Expenses 200,000 251,000    
Accounts payable 50,000 144,000    
Algar, Inc. [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Accrued rent payable 0 180,000    
Expenses 0 14,000    
Accrued bonuses 0 180,000   $ 378,000.0
Algar, Inc. [Member] | Purchase of Scrap Metal [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Expenses 0 1,204,000    
Algar, Inc. [Member] | Management Fee [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Expenses 0 238,000    
Algar, Inc. [Member] | Sale of Scrap Metal [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Revenue from Related Parties 0 7,000    
Algar, Inc. [Member] | Logistical Services [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Revenue from Related Parties 0 48,000    
Algar, Inc. [Member] | IT Services [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Revenue from Related Parties 0 16,000    
Algar, Inc. [Member] | Net rental Income [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Revenue from Related Parties 0 16,000    
K and R, LLC [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Deposits (included in other long-term assets) 42,000 42,000    
Notes Payable, Related Parties 1,600,000 1,504,000    
Accrued Interest Related Party 0 63,000    
K and R, LLC [Member] | Prepaid expenses [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Expenses 43,000 0    
K and R, LLC [Member] | Related Party Transaction, Accrued Rent, Property [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Accrued rent payable 123,000 176,000    
K and R, LLC [Member] | Rent Expense, Property [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Expenses 597,000 646,000    
K and R, LLC [Member] | Lease Expense, Equipment [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Accrued rent payable 0 15,000    
Expenses 0 25,000    
K and R, LLC [Member] | Interest expense [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Expenses 75,000 63,000    
Affiliated Entity, LK Property Investments, LLC [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Deposits (included in other long-term assets) 3,000 3,000    
Expenses 36,000 36,000    
Affiliated Entity, LK Property Investments, LLC [Member] | Prepaid expenses [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Expenses 3,000 0    
MetalX, LLC [Member] | Affiliated Entity [Member]        
Related Party Transaction [Line Items]        
Revenue from Related Parties 188,000 246,000    
Accounts Receivable, Related Parties $ 1,000 $ 105,000