Fair Value Measurements and Interest Rate Swaps - Interest Rate Derivatives (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Interest Rate Swap
Derivative [Line Items]
Fair Value of Assets (Liabilities)	$ (8,129)	$ (12,617)
Interest Rate Swap \| $50 million term loan
Derivative [Line Items]
Rate Fixed	2.41%
Notional Amount	$ 50,000
Fair Value of Assets (Liabilities)	$ (2,219)	(3,231)
Interest Rate Swap \| $350 million term loan
Derivative [Line Items]
Rate Fixed	1.70%
Notional Amount	$ 175,000
Fair Value of Assets (Liabilities)	(5,910)	(9,386)
Unsecured Term Loan \| $50 million term loan
Derivative [Line Items]
Hedged Debt	50,000	50,000
Unsecured Term Loan \| $350 million term loan
Derivative [Line Items]
Hedged Debt	$ 350,000	$ 350,000

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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Fair value, before effects of master netting arrangements, of a financial liability or 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 liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Fixed interest rate related to the interest rate derivative.

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

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