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Leases - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)
Leases [Abstract]
Operating lease, weighted average remaining lease term	23 years
Operating lease, weighted average discount rate, percent	4.70%
Finance lease, weighted average remaining lease term	14 years
Finance lease, weighted average discount rate, percent	5.20%
Operating lease, cost	$ 6.6
Finance lease, cost	0.6
Operating lease, payments	4.4
Right-of-use asset obtained in exchange for operating lease liability	6.8
Sublease income	$ 9.1

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- Definition

Finance Lease, Cost

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Weighted average discount rate for finance lease calculated at point in time.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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Amount of sublease income excluding finance and operating lease expense.

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