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Summary of Significant Accounting Policies - Impairment of Long-lived Assets (Details)	12 Months Ended
	Dec. 31, 2020 reportingUnit
Accounting Policies [Abstract]
Number of reporting units	2

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- References

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- Definition

Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

+ References

No definition available.

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