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Note 9 - Notes Payable and Other Obligations (Tables)
3 Months Ended
Apr. 01, 2017
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
   
April 1,
   
December 31,
 
   
2017
   
2016
 
                 
Note Payable
  $
159
    $
278
 
Other Obligations
   
6,060
     
6,047
 
Uncollateralized promisory notes
   
24,616
     
26,071
 
Total Notes Payable and Other Obligations
   
30,835
     
32,396
 
Current portion of notes payable and other obligations
   
(9,574
)    
(10,764
)
Notes payable and other obligations, less current portion
  $
21,261
    $
21,632
 
Schedule of Maturities of Long-term Debt [Table Text Block]
Period ending April 1,
 
         
2018
  $
9,574
 
2019
   
8,754
 
2020
   
6,536
 
2021
   
4,575
 
2022
   
1,396
 
Total
  $
30,835