The cash inflow from early termination of interest rate swap, designated as a cash flow hedge.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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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

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

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of gain (loss) from the ineffectiveness of the hedge.

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Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets.

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No definition available.

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Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

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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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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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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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Amount of unrealized gain (loss) related to the increase or decrease in fair value of interest rate derivatives designated as cash flow hedging instruments, which was recorded in accumulated other comprehensive income to the extent that the cash flow hedge was determined to be effective.

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Debt - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Jun. 02, 2017
Debt Instrument [Line Items]
Proceeds from early terminated 2017 swap		$ 0.2
Unrealized pre-tax gain (loss) on interest rate swap cash flow hedges, recorded in accumulated other comprehensive loss	$ 0.1	(0.2)	$ (4.3)	$ (1.8)
Interest rate swap liability, fair value	3.4		3.4
Interest rate swap asset, fair value					$ 0.9
Hedge ineffectiveness recorded during the period	0.0	$ 0.0	$ 0.0	$ 0.0
Interest Rate Swap
Debt Instrument [Line Items]
Credit facility outstanding amount						$ 150.0
Interest rate swap, notional amount						$ 150.0
2019 Credit Agreement \| Minimum
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage			0.10%
2019 Credit Agreement \| Maximum
Debt Instrument [Line Items]
Line of credit facility, unused capacity, commitment fee percentage			0.25%
2019 Credit Agreement \| Base Rate \| Minimum
Debt Instrument [Line Items]
Base rate borrowings margin range			0.00%
2019 Credit Agreement \| Base Rate \| Maximum
Debt Instrument [Line Items]
Base rate borrowings margin range			0.75%
2019 Credit Agreement \| LIBOR \| Minimum
Debt Instrument [Line Items]
Base rate borrowings margin range			1.00%
2019 Credit Agreement \| LIBOR \| Maximum
Debt Instrument [Line Items]
Base rate borrowings margin range			1.75%
2019 Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowings	500.0		$ 500.0
Credit facility outstanding amount	238.2		238.2		219.9
Remaining borrowing capacity	250.6		250.6		268.9
2019 Credit Agreement \| Letter of Credit
Debt Instrument [Line Items]
Credit facility outstanding amount	11.2		11.2		$ 11.2
Interest Rate Swap
Debt Instrument [Line Items]
Credit facility outstanding amount	75.0		75.0
Interest rate swap, notional amount	$ 75.0		$ 75.0