RESTRICTED CASH AND INVESTMENTS (Details) - USD ($) $ in Thousands	Apr. 02, 2017	Jan. 01, 2017
Restricted Cash and Investments [Line Items]
Cash collateral held by insurance carriers	$ 28,771	$ 34,910
Cash and cash equivalents held in Trust	25,334	32,841
Investments held in Trust	155,298	146,517
Other	18,717	16,925
Restricted cash and investments	228,120	231,193
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Gross Unrealized Gain	1,222	685
Gross Unrealized Loss	(833)	(1,249)
Fair Value	155,687	145,953
Held-to-maturity Securities, Investment Maturities, Fair Value [Abstract]
Fair Value	155,687	145,953
Municipal debt securities
Restricted Cash and Investments [Line Items]
Investments held in Trust	78,589	71,618
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Gross Unrealized Gain	822	443
Gross Unrealized Loss	(585)	(865)
Fair Value	78,826	71,196
Held-to-maturity Securities, Investment Maturities, Fair Value [Abstract]
Fair Value	78,826	71,196
Corporate debt securities
Restricted Cash and Investments [Line Items]
Investments held in Trust	70,268	68,934
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Gross Unrealized Gain	355	212
Gross Unrealized Loss	(229)	(352)
Fair Value	70,394	68,794
Held-to-maturity Securities, Investment Maturities, Fair Value [Abstract]
Fair Value	70,394	68,794
Agency mortgage-backed securities
Restricted Cash and Investments [Line Items]
Investments held in Trust	5,442	5,965
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Gross Unrealized Gain	40	30
Gross Unrealized Loss	(19)	(32)
Fair Value	5,463	5,963
Held-to-maturity Securities, Investment Maturities, Fair Value [Abstract]
Fair Value	5,463	$ 5,963
U.S. government and agency securities
Restricted Cash and Investments [Line Items]
Investments held in Trust	999
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Gross Unrealized Gain	5
Gross Unrealized Loss	0
Fair Value	1,004
Held-to-maturity Securities, Investment Maturities, Fair Value [Abstract]
Fair Value	1,004
Restricted Cash and Investments [Member]
Restricted Cash and Investments [Line Items]
Investments held in Trust	155,298
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Fair Value	155,687
Held-to-maturity Securities, Investment Maturities, Amortized Cost [Abstract]
Due in one year or less	17,644
Due after one year through five years	72,939
Due after five years through ten years	64,715
Held-to-maturity Securities, Investment Maturities, Fair Value [Abstract]
Due in one year or less	17,680
Due after one year through five years	73,300
Due after five years through ten years	64,707
Fair Value	$ 155,687

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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Fair value of investments in debt securities classified as held-to-maturity.

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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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