FAIR VALUE MEASUREMENTS - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 25, 2020	Mar. 27, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized Gain (Loss) on Securities	$ (356,000)	$ 157,000
Asset impairment charges	1,132,000	$ 0
Property, Plant and Equipment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment charges	736,000
Operating Lease, Right-of-Use Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment charges	383,000
Finance Lease, Right-of-Use Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset impairment charges	$ 13,000