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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The amount of cash, securities, or other assets held by a third-party trustee pursuant to the terms of an agreement which assets are available to be used by beneficiaries to that agreement only within the specific terms thereof and which agreement is expected to terminate within one year of the balance sheet date (or operating cycle, if longer) at which time the assets held-in-trust will be released or forfeited.

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The amount of cash, securities, or other assets held by a third-party trustee pursuant to the terms of an agreement which assets are available to be used by beneficiaries to that agreement only within the specific terms thereof and which agreement is expected to terminate more than one year from the balance sheet date (or operating cycle, if longer) at which time the assets held-in-trust will be released or forfeited.

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).

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Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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This item represents the amount that could be realized under a life insurance contract or contracts owned by the Entity as of the date of the statement of financial position. Such Entity-owned life insurance policies are commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

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Amount of noncurrent assets that are pledged or subject to withdrawal restrictions, classified as other.

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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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Amount of unrealized gain (loss) on investment.

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RESTRICTED CASH AND INVESTMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2022	Jun. 27, 2021	Jun. 26, 2022	Jun. 27, 2021	Dec. 26, 2021
Restricted Cash and Investments [Line Items]
Cash collateral held by insurance carriers	$ 29,179		$ 29,179		$ 28,957
Cash and cash equivalents held in Trust	27,745		27,745		21,590
Investments held in Trust	121,447		121,447		135,419
Company owned life insurance policies	26,759		26,759		32,318
Other restricted cash and cash equivalents	639		639		2,742
Restricted cash and investments	205,769		205,769		221,026
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Amortized cost of held-to-maturity investments	121,447		121,447		135,419
Gross unrealized gains	153		153		3,228
Gross unrealized losses	(3,335)		(3,335)		(563)
Fair value	118,265		118,265		138,084
Held-to-maturity securities, amortized cost [Abstract]
Amortized cost of held-to-maturity investments	121,447		121,447		135,419
Held-to-maturity securities, fair value [Abstract]
Fair value	118,265		118,265		138,084
Unrealized gains (losses) on Investments	(3,549)	$ (1,549)	5,560	$ 2,426
Municipal debt securities
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Amortized cost of held-to-maturity investments	52,362		52,362		56,346
Gross unrealized gains	141		141		2,159
Gross unrealized losses	(237)		(237)		0
Fair value	52,266		52,266		58,505
Held-to-maturity securities, amortized cost [Abstract]
Amortized cost of held-to-maturity investments	52,362		52,362		56,346
Held-to-maturity securities, fair value [Abstract]
Fair value	52,266		52,266		58,505
Corporate debt securities
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Amortized cost of held-to-maturity investments	67,999		67,999		77,925
Gross unrealized gains	12		12		995
Gross unrealized losses	(3,083)		(3,083)		(563)
Fair value	64,928		64,928		78,357
Held-to-maturity securities, amortized cost [Abstract]
Amortized cost of held-to-maturity investments	67,999		67,999		77,925
Held-to-maturity securities, fair value [Abstract]
Fair value	64,928		64,928		78,357
Agency mortgage-backed securities
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Amortized cost of held-to-maturity investments	86		86		148
Gross unrealized gains	0		0		4
Gross unrealized losses	(1)		(1)		0
Fair value	85		85		152
Held-to-maturity securities, amortized cost [Abstract]
Amortized cost of held-to-maturity investments	86		86		148
Held-to-maturity securities, fair value [Abstract]
Fair value	85		85		152
U.S. government and agency securities
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Amortized cost of held-to-maturity investments	1,000		1,000		1,000
Gross unrealized gains	0		0		70
Gross unrealized losses	(14)		(14)		0
Fair value	986		986		1,070
Held-to-maturity securities, amortized cost [Abstract]
Amortized cost of held-to-maturity investments	1,000		1,000		1,000
Held-to-maturity securities, fair value [Abstract]
Fair value	986		986		$ 1,070
Restricted cash and investments
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract]
Amortized cost of held-to-maturity investments	121,447		121,447
Fair value	118,265		118,265
Held-to-maturity securities, amortized cost [Abstract]
Due in one year or less	22,399		22,399
Due after one year through five years	99,048		99,048
Amortized cost of held-to-maturity investments	121,447		121,447
Held-to-maturity securities, fair value [Abstract]
Due in one year or less	22,381		22,381
Due after one year through five years	95,884		95,884
Fair value	$ 118,265		$ 118,265