Quarterly report pursuant to Section 13 or 15(d)

14. Accrued liabilities (Details)

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14. Accrued liabilities (Details) - USD ($)
$ in Thousands
Sep. 29, 2018
Dec. 30, 2017
Payables and Accruals [Abstract]    
Sales tax estimates, including interest $ 4,671 $ 4,563
Compensation and benefits 450 1,061
Deferred revenue 342 300
Accrued incentive and rebate checks 240 285
Accrued rent 33 77
Accrued interest 0 115
Accrued payables 0 129
Other 133 31
Accrued liabilities, current $ 5,869 $ 6,561