RESTRICTED CASH AND INVESTMENTS (Details) - USD ($) $ in Thousands	Dec. 25, 2015	Dec. 26, 2014
Restricted Cash and Investments [Line Items]
Cash collateral held by insurance carriers	$ 23,634	$ 22,639
Cash and cash equivalents held in Trust	26,046	43,856
Investments held in Trust	126,788	90,095
Other	11,944	11,836
Restricted cash and investments	188,412	168,426
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Amortized Cost	126,788	90,095
Gross Unrealized Gain	1,644	1,218
Gross Unrealized Loss	(187)	(247)
Fair Value	128,245	91,066
Held-to-maturity Securities, Investment Maturities, Amortized Cost [Abstract]
Amortized Cost	126,788	90,095
Held-to-maturity Securities, Investment Maturities, Fair Value [Abstract]
Fair Value	128,245	91,066
Municipal debt securities
Restricted Cash and Investments [Line Items]
Investments held in Trust	67,948	52,406
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Amortized Cost	67,948	52,406
Gross Unrealized Gain	1,345	882
Gross Unrealized Loss	(4)	(92)
Fair Value	69,289	53,196
Held-to-maturity Securities, Investment Maturities, Amortized Cost [Abstract]
Amortized Cost	67,948	52,406
Held-to-maturity Securities, Investment Maturities, Fair Value [Abstract]
Fair Value	69,289	53,196
Corporate debt securities
Restricted Cash and Investments [Line Items]
Investments held in Trust	50,462	27,715
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Amortized Cost	50,462	27,715
Gross Unrealized Gain	226	179
Gross Unrealized Loss	(152)	(144)
Fair Value	50,536	27,750
Held-to-maturity Securities, Investment Maturities, Amortized Cost [Abstract]
Amortized Cost	50,462	27,715
Held-to-maturity Securities, Investment Maturities, Fair Value [Abstract]
Fair Value	50,536	27,750
Agency mortgage-backed securities
Restricted Cash and Investments [Line Items]
Investments held in Trust	8,378	9,974
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Amortized Cost	8,378	9,974
Gross Unrealized Gain	73	157
Gross Unrealized Loss	(31)	(11)
Fair Value	8,420	10,120
Held-to-maturity Securities, Investment Maturities, Amortized Cost [Abstract]
Amortized Cost	8,378	9,974
Held-to-maturity Securities, Investment Maturities, Fair Value [Abstract]
Fair Value	8,420	$ 10,120
Restricted Cash and Investments
Restricted Cash and Investments [Line Items]
Investments held in Trust	126,788
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Amortized Cost	126,788
Fair Value	128,245
Held-to-maturity Securities, Investment Maturities, Amortized Cost [Abstract]
Due in one year or less	11,441
Due after one year through five years	55,986
Due after five years through ten years	59,361
Amortized Cost	126,788
Held-to-maturity Securities, Investment Maturities, Fair Value [Abstract]
Due in one year or less	11,504
Due after one year through five years	56,253
Due after five years through ten years	60,488
Fair Value	$ 128,245

Held-to-maturity Securities, Adjustments for Fair Value Calculation [Abstract]

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Carrying amount of cash and investment securities on deposit with state regulatory authorities in connection with capital requirements.

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Fair value of held-to-maturity debt securities maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Fair value of held-to-maturity debt securities maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Other long-term assets not otherwise listed in the existing taxonomy that are pledged or subject to withdrawal restrictions.

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The noncurrent cash, cash equivalents and investments that is restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits classified as long-term; that is not expected to be released from such existing restrictions within one year of the balance sheet date or operating cycle, whichever is longer. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes noncurrent cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal.

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