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Leases - Lease Term and Discount Rate (Details)	Dec. 31, 2020	Dec. 31, 2019
Weighted-average remaining lease term (years)
Operating leases	5 years 9 months 18 days	6 years 8 months 12 days
Finance leases	6 years 3 months 18 days	7 years 3 months 18 days
Weighted-average discount rate
Operating leases	6.19%	6.49%
Finance leases	5.26%	5.27%

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Lease, Weighted Average Discount Rate, Percent [Abstract]

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Lease, Weighted Average Remaining Lease Term [Abstract]

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- Definition

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

+ References

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-Publisher FASB
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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.

+ References

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 55
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-URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971

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