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Note 3 - Accrued Expenses (In Thousands)
12 Months Ended
Dec. 31, 2018
Notes to Financial Statements  
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
3.
Accrued Expenses
(in thousands)
 
 
   
December 31,
 
   
201
8
   
201
7
 
                 
Accrued payroll
  $
154
    $
131
 
Accrued vacation
   
310
     
284
 
Rent payable
   
191
     
139
 
Accrued interest, related party
   
479
     
348
 
Other
   
269
     
86
 
    $
1,403
    $
988