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Leases - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) renewalOption	Dec. 31, 2019 USD ($)
Leases [Line Items]
Number of renewal options | renewalOption	2
Renewal term	10 years
Restricted cash	$ 3.2	$ 3.2
Cost	10.1	8.1
Payments	$ 8.6	$ 7.7
Weighted average remaining term	10 years 3 months 18 days	11 years 2 months 12 days
Weighted average discount rate	5.60%	5.80%
Letter of Credit
Leases [Line Items]
Restricted cash	$ 3.2

X

- Definition

The number of renewal options under the terms of the lease.

+ References

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+ References

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- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

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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- Definition

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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- Definition

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 cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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