Financial Instruments and Fair Values - Terms of Agreements and Fair Value (Details) - Cash Flow Hedging - Designated as Hedging Instrument - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Asset	$ 0	$ 0
Liability	(8,849,000)	(13,330,000)
Interest Rate Swap, One Month LIBOR, 2.1485% \| LIBOR
Derivatives, Fair Value [Line Items]
Notional Amount	$ 265,000,000
Pay Rate	2.1485%
Asset	$ 0	0
Liability	(8,849,000)	(4,247,000)
Interest Rate Swap, Three Month LIBOR, 2.9580% \| LIBOR
Derivatives, Fair Value [Line Items]
Notional Amount	$ 125,000,000.0
Pay Rate	2.958%
Asset	$ 0	0
Liability	$ 0	$ (9,083,000)

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

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- Definition

Nominal or face amount used to calculate payments on the derivative liability.

+ References

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- Definition

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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