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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Stock Plans (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 28, 2020
Mar. 30, 2019
Stock Option Plans    
Defined Benefit Plan Disclosure [Line Items]    
Shares of common stock available for issuance (in shares) 1,205,205  
Expiration period for grant 7 years  
Compensation expense $ 3,325 $ 3,670
Income tax benefits $ 831 $ 918
Stock Option Plans | Minimum    
Defined Benefit Plan Disclosure [Line Items]    
Vesting period of options 3 years  
Stock Option Plans | Maximum    
Defined Benefit Plan Disclosure [Line Items]    
Vesting period of options 6 years  
Restricted Stock Units (RSUs)    
Defined Benefit Plan Disclosure [Line Items]    
Vesting period of options 3 years