Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details 4)

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Income Taxes (Details 4) - USD ($)
$ in Thousands
12 Months Ended
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Reconciliation of Unrecognized Tax Benefits [Roll Forward]      
Unrecognized tax benefit, beginning balance $ 6,113 $ 4,542 $ 3,501
Increases from positions taken during prior periods 1,121 372 1,525
Increases from positions taken during current period 817 2,036 558
Lapse of statute of limitations 0 (837) (1,042)
Unrecognized tax benefit, ending balance $ 8,051 $ 6,113 $ 4,542