WORKERS' COMPENSATION INSURANCE AND RESERVES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Apr. 02, 2017	Mar. 25, 2016	Jan. 01, 2017
Workers' Compensation Deductible Limit [Line Items]
Workers' compensation claim deductible limit	$ 2.0
Weighted average period - claim payments below deductible limit	4 years 6 months
Payments made against self-insured claims	$ 15.9	$ 18.9
Weighted average period - claim payments and receivables above deductible limit	15 years
Excess claims	$ 50.6		$ 52.9
Workers' compensation claim receivables net of valuation allowance	46.6		$ 48.9
Workers' compensation expense	$ 19.8	$ 24.1
Below limit
Workers' Compensation Deductible Limit [Line Items]
Weighted average rate	1.60%		1.60%