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Description of Business and Summary of Significant Accounting Policies, Impairment of Long-Lived Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2018
Impairment of Long-Lived Assets [Abstract]
Impairment loss	$ 2,415	$ 0	$ 0

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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X

- Definition

Amount of loss from impairment of right-of-use asset from operating lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 25
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121593497&loc=SL77918431-209957

+ Details

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