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Maximum amount of additional loans that may be issued under the accordion feature of the debt agreement subject to receipt of lender commitments and satisfaction of certain customary conditions.

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Representing fixed charge coverage ratio.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Weighted average interest rate of debt outstanding.

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Fixed interest rate related to the interest rate derivative.

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Amount of liability hedged in fair value hedging relationship.

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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The cash outflow for a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations.

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The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of uncollateralized debt obligations (with maturities initially due after one year or beyond the operating cycle if longer).

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Bank Note Payable, Term Note Payable and Private Placements (Details)						12 Months Ended
	Oct. 25, 2021 USD ($)	Sep. 30, 2021 USD ($)	Jun. 04, 2021 USD ($)	Dec. 24, 2020 USD ($)	Oct. 24, 2017 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 23, 2020 USD ($)	Mar. 29, 2019 USD ($)	Mar. 07, 2019 USD ($)	Sep. 27, 2018 USD ($)	Aug. 02, 2018 USD ($)	Oct. 18, 2017 USD ($)
Debt Instrument [Line Items]
Repayments of unsecured debt						$ 445,000,000	$ 50,000,000
Loss on extinguishment of debt						(901,000)
Unsecured term loan						274,286,000	717,323,000
Portion of future LIBOR-based rate risk						5,200,000
Total available						$ 600,000,000
Borrowings outstanding							$ 3,500,000
Senior Notes
Debt Instrument [Line Items]
Principal amount of loan					$ 200,000,000
Fixed charge coverage ratio					1.50
Series A Notes
Debt Instrument [Line Items]
Principal amount of loan					$ 116,000,000
Interest rate (as a percent)						4.49%
Series B Notes
Debt Instrument [Line Items]
Principal amount of loan					$ 84,000,000
Interest rate (as a percent)						4.76%
Maximum \| Senior Notes
Debt Instrument [Line Items]
Unsecured leverage ratio					60.00%
Unsecured leverage ratio for significant acquisition					65.00%
2012 Revolver \| Federal Funds Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.50%
2012 Revolver \| One month LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						1.00%
BAML Revolver
Debt Instrument [Line Items]
Basis spread on variable rate at period end (as a percent)						0.30%
Weighted average interest rate (as a percent)						1.33%	1.65%
Effective interest rate (as a percent)						1.65%
Total available						$ 600,000,000
Borrowings outstanding						$ 0	$ 3,500,000
BAML Revolver \| A- \| A3 \| Minimum
Debt Instrument [Line Items]
Facility fee (as a percent)						0.125%
BAML Revolver \| BBB+ \| Baa1
Debt Instrument [Line Items]
Facility fee (as a percent)						0.15%
BAML Revolver \| BBB \| Baa2
Debt Instrument [Line Items]
Facility fee (as a percent)						0.20%
BAML Revolver \| BBB- \| Baa3
Debt Instrument [Line Items]
Facility fee (as a percent)						0.25%
BAML Revolver \| BBB- \| Baa3 \| Maximum
Debt Instrument [Line Items]
Facility fee (as a percent)						0.30%
BAML Revolver \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate at period end (as a percent)						1.55%
BAML Revolver \| LIBOR \| A- \| A3 \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.825%
BAML Revolver \| LIBOR \| BBB+ \| Baa1
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.875%
BAML Revolver \| LIBOR \| BBB \| Baa2
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						1.00%
BAML Revolver \| LIBOR \| BBB- \| Baa3
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						1.20%
BAML Revolver \| LIBOR \| BBB- \| Baa3 \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						1.55%
BAML Revolver \| Bank's base rate
Debt Instrument [Line Items]
Basis spread on variable rate at period end (as a percent)						0.55%
BAML Revolver \| Bank's base rate \| A- \| A3 \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.00%
BAML Revolver \| Bank's base rate \| BBB+ \| Baa1
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.00%
BAML Revolver \| Bank's base rate \| BBB \| Baa2
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.00%
BAML Revolver \| Bank's base rate \| BBB- \| Baa3
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.20%
BAML Revolver \| Bank's base rate \| BBB- \| Baa3 \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.55%
BAML Term Loan
Debt Instrument [Line Items]
Principal amount of loan													$ 400,000,000
Repayments of unsecured debt	$ 200,000,000	$ 90,000,000
Loss on extinguishment of debt	$ (700,000)
Unsecured term loan						$ 110,000,000
Weighted average interest rate (as a percent)						1.85%
Effective interest rate (as a percent)						1.84%
Maximum borrowing capacity allowed by exercising an accordion feature						$ 500,000,000
BAML Term Loan \| Federal Funds Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.50%
BAML Term Loan \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate at period end (as a percent)						1.75%
Fixed rate (as a percent)						1.12%
BAML Term Loan \| LIBOR \| A- \| A3 \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.90%
BAML Term Loan \| LIBOR \| BBB+ \| Baa1
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.95%
BAML Term Loan \| LIBOR \| BBB \| Baa2
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						1.10%
BAML Term Loan \| LIBOR \| BBB- \| Baa3
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						1.35%
BAML Term Loan \| LIBOR \| BBB- \| Baa3 \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						1.75%
BAML Term Loan \| Bank's base rate
Debt Instrument [Line Items]
Basis spread on variable rate at period end (as a percent)						0.75%
BAML Term Loan \| Bank's base rate \| A- \| A3 \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.00%
BAML Term Loan \| Bank's base rate \| BBB+ \| Baa1
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.00%
BAML Term Loan \| Bank's base rate \| BBB \| Baa2
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.10%
BAML Term Loan \| Bank's base rate \| BBB- \| Baa3
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.35%
BAML Term Loan \| Bank's base rate \| BBB- \| Baa3 \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.75%
BAML Term Loan \| One month LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						1.00%
JPM Term Loan
Debt Instrument [Line Items]
Principal amount of loan												$ 150,000,000
Repayments of unsecured debt			$ 100,000,000	$ 50,000,000
Loss on extinguishment of debt			(100,000)
Unsecured term loan								$ 100,000,000
Portion of future LIBOR-based rate risk						$ 100,000,000
JPM Term Loan \| Hedged portion
Debt Instrument [Line Items]
Payment to terminate interest rate swap			1,200,000
Portion of future LIBOR-based rate risk									$ 100,000,000	$ 100,000,000
JPM Term Loan \| LIBOR \| Hedged portion
Debt Instrument [Line Items]
Fixed rate (as a percent)									2.44%
BMO Term Loan
Debt Instrument [Line Items]
Principal amount of loan											$ 220,000,000
Additional loans allowed by exercising an accordion feature						$ 100,000,000
Effective interest rate (as a percent)						4.04%
BMO Term Loan \| Federal Funds Rate
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						0.50%
BMO Term Loan \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate at period end (as a percent)						1.65%
Fixed rate (as a percent)						2.32%
BMO Term Loan \| LIBOR \| Hedged portion
Debt Instrument [Line Items]
Fixed rate (as a percent)						2.39%
BMO Term Loan \| LIBOR \| A- \| A3 \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						85.00%
BMO Term Loan \| LIBOR \| BBB+ \| Baa1
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						90.00%
BMO Term Loan \| LIBOR \| BBB \| Baa2
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						100.00%
BMO Term Loan \| LIBOR \| BBB- \| Baa3
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						125.00%
BMO Term Loan \| LIBOR \| BBB- \| Baa3 \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						165.00%
BMO Term Loan \| Bank's base rate
Debt Instrument [Line Items]
Basis spread on variable rate at period end (as a percent)						0.65%
BMO Term Loan \| Bank's base rate \| BBB- \| Baa3
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						25.00%
BMO Term Loan \| Bank's base rate \| BBB- \| Baa3 \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						65.00%
BMO Term Loan \| One month LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)						1.00%
Tranche A Term Loan
Debt Instrument [Line Items]
Principal amount of loan											$ 55,000,000
Loss on extinguishment of debt			(100,000)
Payment to terminate interest rate swap			$ 600,000
Tranche B Term Loan
Debt Instrument [Line Items]
Principal amount of loan						$ 165,000,000