Quarterly report pursuant to Section 13 or 15(d)

5. Product Warranty (Details)

v3.7.0.1
5. Product Warranty (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 01, 2017
Apr. 02, 2016
Guarantees [Abstract]    
Beginning Balance $ 26 $ 42
Standard accrual based on units sold 4 17
Actual costs incurred (4) (16)
Periodic accrual adjustments (4) (17)
Ending Balance $ 22 $ 26