Debt (Details)						3 Months Ended		9 Months Ended		12 Months Ended
	Jan. 24, 2031	Jan. 24, 2030	Jan. 24, 2029	Sep. 30, 2025 USD ($)	Sep. 24, 2025 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Notes Payable
Debt, Long-Term and Short-Term, Combined Amount				$ 930,000,000		$ 930,000,000		$ 930,000,000		$ 845,000,000
Unamortized deferred financing costs				(12,548,000)		(12,548,000)		(12,548,000)		(3,953,000)
Debt, net of unamortized deferred financing costs				$ 917,452,000		917,452,000		917,452,000		$ 841,047,000
Proceeds from Unsecured Lines of Credit								50,000,000
Interest Expense
Interest expense on debt						12,927,000	$ 12,395,000	37,209,000	$ 37,012,000
Noncash interest on derivatives, net						(495,000)	3,326,000	668,000	1,095,000
Amortization of deferred financing costs						980,000	741,000	2,782,000	2,219,000
Capitalized interest							(480,000)	(1,401,000)	(641,000)
Total interest expense						13,412,000	$ 15,982,000	39,258,000	$ 39,685,000
Unsecured Term Loans
Notes Payable
Interest rate, description of reference rate				SOFR						SOFR
Unsecured Debt										$ 675,000,000
Term loan #1
Notes Payable
Unsecured Debt										175,000,000
Term loan #2
Notes Payable
Unsecured Debt										175,000,000
Term loan #3
Notes Payable
Unsecured Debt										225,000,000
Term loan #4
Notes Payable
Unsecured Debt										100,000,000
Unsecured Term Loans All Maturity Date 01242031 [Member]
Notes Payable
Unsecured Debt				$ 760,000,000		$ 760,000,000		$ 760,000,000
Term Loan 1 Maturity Date 01242031 [Member]
Notes Payable
Debt Instrument, Maturity Date			Jan. 24, 2029	Jan. 24, 2029
Number of interest rate swap derivative agreements				1		1		1
Unsecured Debt				$ 185,000,000		$ 185,000,000		$ 185,000,000
Line of Credit Facility, Interest Rate at Period End				4.68%		4.68%		4.68%
Number of extension periods for unsecured debt					2
Term of extension period for unsecured debt					12 months
Debt Instrument, Maturity Date Range, End	Jan. 24, 2031
Term Loan 2 Maturity Date 01242031 [Member]
Notes Payable
Debt Instrument, Maturity Date		Jan. 24, 2030		Jan. 24, 2030
Number of interest rate swap derivative agreements				3		3		3
Unsecured Debt				$ 275,000,000		$ 275,000,000		$ 275,000,000
Line of Credit Facility, Interest Rate at Period End				5.34%		5.34%		5.34%
Number of extension periods for unsecured debt				1		1		1
Term of extension period for unsecured debt					12 months
Debt Instrument, Maturity Date Range, End	Jan. 24, 2031
Term Loan 3 Maturity Date 01242031 [Member]
Notes Payable
Debt Instrument, Maturity Date				Jan. 24, 2031
Number of interest rate swap derivative agreements				1		1		1
Unsecured Debt				$ 300,000,000		$ 300,000,000		$ 300,000,000
Line of Credit Facility, Interest Rate at Period End				5.53%		5.53%		5.53%
Number of extension periods for unsecured debt					0
Notional amount				$ 25,000,000		$ 25,000,000		$ 25,000,000
Senior Notes
Notes Payable
Unsecured Debt				$ 170,000,000		$ 170,000,000		$ 170,000,000		$ 170,000,000
Series A Senior Notes
Notes Payable
Debt Instrument, Maturity Date								Jan. 10, 2026		Jan. 10, 2026
Fixed interest rate (as a percent)				4.69%		4.69%		4.69%
Unsecured Debt				$ 65,000,000		$ 65,000,000		$ 65,000,000		$ 65,000,000
Series B Senior Notes
Notes Payable
Debt Instrument, Maturity Date								Jan. 10, 2028		Jan. 10, 2028
Fixed interest rate (as a percent)				4.79%		4.79%		4.79%
Unsecured Debt				$ 105,000,000		$ 105,000,000		$ 105,000,000		$ 105,000,000