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Note 9 - Operating Leases (Tables)
3 Months Ended
Mar. 31, 2019
Notes Tables  
Lease, Cost [Table Text Block]
   
Three Months Ended
 
   
March 31,
   
April 1,
 
   
2019
   
2018
 
Operating Lease Cost
  $
145
    $
151
 
Variable Lease Cost
   
21
     
18
 
Total Lease Cost
  $
166
    $
169
 
Lessee, Lease, Cash Flow Information [Table Text Block]
   
Three Months Ended
 
   
March 31,
   
April 1,
 
   
2019
   
2018
 
Cash paid for amounts included in the measurement of lease liabilities:
               
Operating cash flows from operating leases
  $
150
    $
153
 
Right-of-use assets obtained in exchange for lease liabilities:
  $
131
    $
-
 
Lessee, Lease, Balance Sheet Information [Table Text Block]
 
Balance Sheet Classification
 
March 31,
2019
   
December 31,
2018
 
Assets:
                 
Operating lease right-of-use asset
Other noncurrent assets
  $
844
    $
805
 
                   
Liabilities:
                 
Current operating lease liability
Accrued expenses and other current liabilities
  $
412
    $
439
 
Operating lease liability, net of current portion
Other noncurrent liabilities
   
436
     
376
 
Total operating lease liability
  $
848
    $
815
 
                   
Weighted-average remaining lease term (years)
   
2.3
     
2.1
 
                   
Weighted-average discount rate
   
4.5
%    
4.5
%
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
Maturity of
Operating
Lease Liabilities
 
 
 
 
2019
  $
307
 
2020
   
389
 
2021
   
160
 
2022
   
36
 
2023
   
-
 
Thereafter
   
-
 
Total lease payments
   
892
 
Less: Imputed interest
   
(44
)
Present value of remaining lease payments
  $
848