XML 35 R24.htm IDEA: XBRL DOCUMENT v3.7.0.1
Note 4 - Accounts Receivable, Transit Accounts Receivable and Transit Accounts Payable (Tables)
6 Months Ended
Jul. 01, 2017
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
   
July 1,
2017
   
December 31,
2016
 
Billed
  $
33,075
    $
34,463
 
Accrued and unbilled
   
5,688
     
6,894
 
Work-in-progress
   
5,885
     
5,215
 
Allowance for sales discounts and doubtful accounts
   
(1,496
)
   
(1,402
)
                 
Accounts receivable, net
  $
43,152
    $
45,170