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Note 7 - Deferred Rent (Tables)
 12 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Deferred Rent [Table Text Block]
(In thousands)
 
2018
  
Landlord-funded leasehold improvements
   $
1,125
  
Less accumulated amortization
    
(757
)
Total (current portion $130 December 31, 2018)
    
368
  
Straight line rent adjustment
    
111
  
Total deferred rent
   $
479