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10. Borrowings (Tables)
9 Months Ended
Oct. 01, 2016
Debt Disclosure [Abstract]  
Schedule of long-term debt, capital lease and other financing obligations
   October 1, 2016   January 2, 2016 
PNC term loan  $1,084   $1,275 
Susquehanna term loans   3,242    3,242 
2.75% note, due in monthly installments of $3, including interest, due October 2024, collateralized by equipment   295    319 
Capital leases and other financing obligations   1,100    988 
Debt issuance costs, net   (114)   (67)
    5,607    5,757 
Less current maturities   2,297    1,251 
   $3,310   $4,506