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WORKERS' COMPENSATION INSURANCE AND RESERVES - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Apr. 01, 2018
Apr. 02, 2017
Dec. 31, 2017
Workers' Compensation Deductible Limit [Line Items]      
Workers' compensation claim deductible limit $ 2.0    
Weighted average period - claim payments below deductible limit 5 years    
Payments made against self-insured claims $ 17.2 $ 15.9  
Weighted average period - claim payments and receivables above deductible limit 15 years    
Excess claims $ 48.5   $ 48.8
Workers' compensation claim receivables net of valuation allowance 44.6   $ 45.0
Workers' compensation expense $ 16.6 $ 19.8  
Below limit      
Workers' Compensation Deductible Limit [Line Items]      
Weighted average rate 1.90%   1.80%
Above Limit [Member] [Domain]      
Workers' Compensation Deductible Limit [Line Items]      
Weighted average rate 2.50%   2.51%