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INCOME AND OTHER TAXES (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jul. 03, 2021
Jun. 27, 2020
Jul. 03, 2021
Jun. 27, 2020
Uncertain Tax Benefits        
Gross unrecognized tax benefits $ 7,300,000   $ 7,300,000  
Net unrecognized tax benefits 6,400,000   6,400,000  
Gross accrued interest 3,000,000.0   3,000,000.0  
Net accrued interest 2,400,000   2,400,000  
Penalties accrued 0   0  
Other Tax Matters        
Income tax provision 2,000,000.0 $ 3,000,000.0 6,100,000 $ 5,300,000
Pre-tax income (loss) from continuing operations $ 16,700,000 $ 18,200,000 $ 39,800,000 $ 30,000,000.0
Effective income tax rate (as a percent) 12.00% 16.50% 15.30% 17.70%
Tax benefits associated with statute expirations $ 2,200,000   $ 500,000  
Excess tax benefits from stock-based compensation awards vested 300,000   1,000,000.0 $ 1,500,000
Maximum        
Uncertain Tax Benefits        
Reasonably possible amount that unrecognized tax benefits could decrease within next 12 months, high end of range $ 5,000,000.0   $ 5,000,000.0