Annual report pursuant to Section 13 and 15(d)

Valuation And Qualifying Accounts (Details)

v3.19.3.a.u2
Valuation And Qualifying Accounts (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Allowance For Sale Returns [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at beginning of period $ 839 $ 632 $ 696
Charged to costs and expenses 168 307 44
Deductions 235 100 108
Balance at end of period 772 839 632
Allowance For Doubtful Accounts [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at beginning of period 139 325 743
Charged to costs and expenses 146 8 14
Deductions 24 194 432
Balance at end of period 261 139 325
Valuation Allowance - Deferred Tax Assets [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at beginning of period 44,199 13,980 640
Charged to costs and expenses 20,086 30,219 13,340
Balance at end of period $ 64,285 $ 44,199 $ 13,980