Long-Term Debt- Additional Information (Details) $ in Thousands	9 Months Ended
Sep. 30, 2020 USD ($) Contract	Sep. 30, 2019 USD ($)
Debt Instrument [Line Items]
Payments for (proceeds from) derivative instrument operating activities	$ 33,499	$ 13,325
3.07% Due in 2050 [member] \| Line of Credit [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	400,000
3.07% Due in 2050 [member] \| First Mortgage [Member]
Debt Instrument [Line Items]
Secured debt	$ 165,000
Interest rate	3.07%
Maturity year	2050
Number of interest rate swaps settled \| Contract	7
Settled derivative notional amount	$ 70,000
Repayments of debt	$ 52,000

Number of interest rate swaps settled.

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- Definition

Payments for (proceeds from) derivative instrument operating activities.

+ References

No definition available.

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- Definition

Settled derivative notional amount.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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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.

+ References

No definition available.

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Description of the maturity date of the debt instrument including whether the debt matures serially and, if so, a brief description of the serial maturities.

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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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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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-Publisher FASB
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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ References

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