Annual report pursuant to Section 13 and 15(d)

Valuation And Qualifying Accounts (Details)

v3.6.0.2
Valuation And Qualifying Accounts (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
Allowance For Sales Returns [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at beginning of period $ 521 $ 718 $ 591
Charged to costs and expenses 213 49 194
Charged to other accounts
Deductions 38 246 67
Balance at end of period 696 521 718
Allowance For Doubtful Accounts [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at beginning of period 1,936 1,788 1,880
Charged to costs and expenses 220 162 26
Charged to other accounts
Deductions 1,413 14 118
Balance at end of period 743 1,936 1,788
Valuation Allowance - Deferred Tax Assets [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at beginning of period 607 526 530
Charged to costs and expenses 33 81  
Charged to other accounts
Deductions     4
Balance at end of period $ 640 $ 607 $ 526