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Receivables, Net (Tables)
 3 Months Ended
Mar. 28, 2020
Receivables [Abstract]  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Receivables are summarized as follows:
 
March 28,
2020
 
December 28,
2019
Customers, trade
$
36,025

 
$
34,285

Other receivables
2,385

 
3,115

Gross receivables
38,410

 
37,400

Less: allowance for doubtful accounts
(181
)
 
(262
)
Receivables, net
$
38,229

 
$
37,138