XML 56 R35.htm IDEA: XBRL DOCUMENT v3.8.0.1
BALANCE SHEET COMPONENTS - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Jan. 01, 2017
Jan. 03, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]      
Depreciation and amortization expense $ 1,373 $ 1,332 $ 1,409
Assets acquired under capital leases 1,300 772  
Accumulated depreciation on capital lease assets 607 515  
Capital software leases $ 654 $ 209