Annual report pursuant to Section 13 and 15(d)

Restricted Cash (Details)

v3.3.1.900
Restricted Cash (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 02, 2016
Dec. 27, 2014
Dec. 28, 2013
Dec. 29, 2012
Restricted Cash and Cash Equivalents Items [Line Items]        
Restricted cash $ 44 $ 319    
Cash and cash equivalents $ 81,932 56,843 $ 54,912 $ 34,478
Estimated period of restricted cash amount 2 months      
Seungwon Acquisition [Member]        
Restricted Cash and Cash Equivalents Items [Line Items]        
Restricted cash $ 0      
Cash and cash equivalents   272    
United Kingdom [Member] | Customs deferment Reserves [Member]        
Restricted Cash and Cash Equivalents Items [Line Items]        
Restricted cash $ 44      
Cash and cash equivalents   $ 47