DEBT - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 25, 2016	Mar. 26, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
Debt Instrument [Line Items]
Principal debt repayments				$ 46,831	$ 37,100
Gain in other income	$ 0		$ 0	8,844	$ 0
Senior Notes [Member]
Debt Instrument [Line Items]
Repurchased face amount		$ 43,600
Amount retired plus accrued and unpaid interest		34,100
Gain in other income		8,800
Unamortized debt issuance costs written off		$ 700
Line of Credit [Member]
Debt Instrument [Line Items]
Principal debt repayments				$ 12,800