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Reconciliation of Provision for Income Taxes at Statutory Federal Income Tax Rate Compared to Provision for Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 28, 2020
Dec. 30, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
Statutory federal income tax benefit (provision) $ 9,718 $ (7,209) $ (9,909)
State income taxes, net of federal benefit and state tax credits (2,674) (3,163) (1,953)
Transfer pricing     1,483
Acquisition related expenses     (1,737)
IRC Section 162(m) limitation (712) (868) (3,702)
Stock options (1,298) (252) 1,072
Global Intangible Low-Taxed Income (1,300)    
Permanently reinvested earnings assertion (1,442) (1,765) (14,313)
Foreign tax differential on foreign earnings & other permanent items 3,933 687 (3,685)
Change in valuation allowance (2,668) 2,127 118,451
Uncertain tax positions 36,936 999 (954)
Federal research and development credits 4,250 4,582 2,996
Goodwill impairment (14,532)    
Other (320) 2,457 458
Income tax benefit (provision) $ 29,891 $ (2,405) $ 88,207