Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill impairment charge	$ 379,900	$ 0	$ 0	$ 379,863
Restricted cash held to repay outstanding debt			$ 69,900
Expected life of options		10 years
Minimum
Estimated useful lives		3 years
Maximum
Estimated useful lives		40 years