Fair value of the assets less the liabilities of a derivative or group of derivatives.

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-Topic 825
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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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Nominal or face amount used to calculate payment on derivative.

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Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of increase (decrease) in interest income on interest-earning asset.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

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Number of interest rate derivative instruments held by the entity at the reporting date.

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Adjustment to Interest Expense

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Derivative Instruments - Additional information (Details) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2024 USD ($) agreement	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2021 USD ($) agreement	Dec. 31, 2019 USD ($) agreement
Derivative [Line Items]
Interest income, interest-earning asset, increase (decrease)	$ 0.1		$ 0.2
Interest Rate Contract
Derivative [Line Items]
Borrowings at variable interest rates	$ 290.0		353.0
Number of interest rate swap agreements \| agreement	3
Number of interest rate swaps entered into \| agreement				4
Derivative, notional amount				$ 100.0
Net fair value of swap asset	$ 15.2		$ 16.5
Adjustment to interest expense	$ 3.1	$ 5.4
2021 Swap Agreements, Group 1
Derivative [Line Items]
Number of interest rate swap agreements \| agreement	2
2021 Swap Agreements, Group 2
Derivative [Line Items]
Number of interest rate swap agreements \| agreement	2
Remaining maturity term	22 months
2019 Swap Ageement
Derivative [Line Items]
Number of interest rate swap agreements \| agreement					1
Derivative, notional amount					$ 100.0
Remaining maturity term	3 months