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FAIR VALUE MEASUREMENT (Details) - USD ($) $ in Thousands	Dec. 25, 2015	Dec. 01, 2015	Dec. 26, 2014
Fair Value Measurement [Line Items]
Other restricted assets	$ 11,944		$ 11,836
Restricted investments classified as held-to-maturity	128,245		91,066
Carrying Value
Fair Value Measurement [Line Items]
Cash and cash equivalents	29,781		19,666
Contingent consideration		$ 19,300
Carrying Value | Restricted Assets
Fair Value Measurement [Line Items]
Restricted cash and cash equivalents	49,680		68,359
Other restricted assets	11,944		9,972
Restricted investments classified as held-to-maturity	126,788		90,095
Total Fair Value
Fair Value Measurement [Line Items]
Cash and cash equivalents	29,781		19,666
Contingent consideration		19,300
Total Fair Value | Certificate of deposits
Fair Value Measurement [Line Items]
Marketable securities classified as available-for-sale			1,500
Total Fair Value | Restricted Assets
Fair Value Measurement [Line Items]
Restricted cash and cash equivalents	49,680		68,359
Other restricted assets	11,944		9,972
Restricted investments classified as held-to-maturity	128,245		91,066
Level 1
Fair Value Measurement [Line Items]
Cash and cash equivalents	29,781		19,666
Marketable securities classified as available-for-sale			0
Contingent consideration		0
Level 1 | Restricted Assets
Fair Value Measurement [Line Items]
Restricted cash and cash equivalents	49,680		68,359
Other restricted assets	11,944		9,972
Restricted investments classified as held-to-maturity	0		0
Level 2
Fair Value Measurement [Line Items]
Cash and cash equivalents	0		0
Contingent consideration		0
Level 2 | Certificate of deposits
Fair Value Measurement [Line Items]
Marketable securities classified as available-for-sale			1,500
Level 2 | Restricted Assets
Fair Value Measurement [Line Items]
Restricted cash and cash equivalents	0		0
Other restricted assets	0		0
Restricted investments classified as held-to-maturity	128,245		91,066
Level 3
Fair Value Measurement [Line Items]
Cash and cash equivalents	0		$ 0
Marketable securities classified as available-for-sale
Contingent consideration		$ 19,300
Level 3 | Restricted Assets
Fair Value Measurement [Line Items]
Restricted cash and cash equivalents	0		$ 0
Other restricted assets	0		0
Restricted investments classified as held-to-maturity	$ 0		$ 0

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