Quarterly report pursuant to Section 13 or 15(d)

INCOME TAXES (Details)

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INCOME TAXES (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 26, 2020
Sep. 28, 2019
Sep. 26, 2020
Sep. 28, 2019
Operating Loss Carryforwards [Line Items]        
Effective income tax rate     (7.20%) 25.70%
Net discrete tax benefits (expense)     $ 6,800 $ (1,100)
Non-cash impairment of intangible asset $ 0 $ 32,636 $ 0 $ 32,636
Impairment, tax benefit   $ 7,400    
Tax increase (reduction) due to discrete items     (29.20%) 1.20%
Realization of unrecognized net tax benefit (expense)       $ (4,500)
Tax benefit related stock compensation       $ 3,400
Income tax rate, excluding discrete items     22.00% 24.50%
Decrease in unrecognized tax benefits and associated interest     $ 500  
Net unrecognized tax benefits and interest, if recognized, would reduce the annual effective tax rate 14,800   14,800  
Possible decrease in unrecognized income tax benefits 900   900  
Amount of unrecorded benefit $ 700   700  
Foreign Tax Authority        
Operating Loss Carryforwards [Line Items]        
Net discrete tax benefits (expense)     6,300  
State and Local Jurisdiction        
Operating Loss Carryforwards [Line Items]        
Net discrete tax benefits (expense)     $ 700