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Consolidated Statements of Operations - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 26, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Statement [Abstract]      
Revenue $ 556,496 $ 305,896 $ 273,784
Cost of revenue 278,043 170,868 125,505
Gross profit 278,453 135,028 148,279
Operating expenses:      
Research and development 84,584 48,358 39,953
Sales and marketing 48,136 28,251 22,010
General and administrative 65,310 53,017 33,698
Amortization 53,746 10,445 1,534
Total operating expenses 251,776 140,071 97,195
Operating income (loss) 26,677 (5,043) 51,084
Interest income, net 2,899 3,666 2,206
Other income (expense), net (2,708) 780 56
Income (loss) before provision (benefit) for income taxes 26,868 (597) 53,346
Provision (benefit) for income taxes (4,157) (2,507) 8,250
Net income $ 31,025 $ 1,910 $ 45,096
Earnings per share:      
Basic $ 0.63 $ 0.06 $ 1.77
Diluted $ 0.63 $ 0.06 $ 1.74
Weighted average number of shares outstanding:      
Basic 49,136 29,729 25,470
Diluted 49,475 30,007 25,895