Indebtedness - Summary of Indebtedness (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 2,076,870
Unsecured Credit Facility	143,000	$ 79,000
2027 Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 6,070	6,070
Interest Rate	7.15%
Effective Interest Rate	7.11%
Maturity Date	May 15, 2027
2028 Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 31,901	31,901
Interest Rate	7.60%
Effective Interest Rate	8.13%
Maturity Date	Jul. 15, 2028
2032 Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 10,600	10,600
Interest Rate	7.75%
Effective Interest Rate	7.87%
Maturity Date	Apr. 15, 2032
2027 Private Placement Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 125,000	125,000
Interest Rate	4.30%
Effective Interest Rate	4.30%
Maturity Date	Apr. 20, 2027
2028 Private Placement Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 150,000	150,000
Interest Rate	3.86%
Effective Interest Rate	3.86%
Maturity Date	Feb. 15, 2028
2029 Private Placement Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 75,000	75,000
Interest Rate	4.40%
Effective Interest Rate	4.40%
Maturity Date	Apr. 20, 2029
2029 II Private Placement Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 150,000	150,000
Interest Rate	3.97%
Effective Interest Rate	4.23%
Maturity Date	Jul. 23, 2029
2030 Private Placement Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 150,000	150,000
Interest Rate	3.96%
Effective Interest Rate	3.96%
Maturity Date	Feb. 15, 2030
2030 II Private Placement Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 100,000	$ 100,000
Interest Rate	2.74%
Effective Interest Rate	2.74%	2.74%
Maturity Date	Sep. 17, 2030
2032 Private Placement Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 200,000	$ 200,000
Interest Rate	2.84%
Effective Interest Rate	2.84%	2.84%
Maturity Date	Sep. 17, 2032
2015 Unsecured Term Loan
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 0	$ 260,000
2021 Unsecured Term Loan (A)
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 200,000	200,000
Interest Rate	1.84%
Maturity Date	Jul. 07, 2026
2022 Unsecured Term Loan (A)
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 425,000	0
Interest Rate	3.64%
Maturity Date	Oct. 18, 2027
2022 Unsecured Term Loan II (A)(B)
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 300,000	0
Interest Rate	4.88%
Maturity Date	Aug. 12, 2025
Mortgage Loans Payable
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 10,299	79,764
Unamortized Debt Issuance Costs	0	(90)
Long-term Debt	$ 10,299	79,674
Interest Rate	4.17%
Effective Interest Rate	4.17%
Maturity Date	Aug. 01, 2028
Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 998,571	998,571
Unamortized Debt Issuance Costs	(4,777)	(5,491)
Unamortized Discounts	(52)	(59)
Long-term Debt	993,742	993,021
Unsecured Term Loans
Debt Instrument [Line Items]
Long-term Debt, Gross	925,000	460,000
Unamortized Debt Issuance Costs	(5,740)	(1,675)
Long-term Debt	919,260	458,325
Unsecured Credit Facility
Debt Instrument [Line Items]
Unamortized Debt Issuance Costs	(3,285)	(4,577)
Unsecured Credit Facility	$ 143,000	$ 79,000
Interest Rate	5.16%
Maturity Date	Jul. 07, 2025

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

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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- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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- Definition

Amount, after accumulated amortization, of debt discount.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

No definition available.

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