Quarterly report pursuant to Section 13 or 15(d)

Accounting Policies (Details 1)

Accounting Policies (Details 1) - USD ($)
$ in Thousands
3 Months Ended
Dec. 30, 2018
Dec. 31, 2017
Accounting Policies [Abstract]    
Beginning balance $ 101 $ 174
Incurred costs for warranties during the three month period (7)
Warranties reserved for new product shipped during the three month period( [1] 29 62
Change in estimate for pre-existing warranty liabilities as of prior period end [2] (50) 15
Ending balance $ 73 $ 251
[1] Warranty expenses accrued to cost of sales (based on current period shipments and historical warranty return rate).
[2] Changes in estimated warranty liabilities recognized in cost of sales associated with: the period end customer returned warranty backlog, or the actual costs of repaired/replaced warranty units which were shipped to the customer during the current period.