The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Name:	us-gaap_RetainedEarningsAccumulatedDeficit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Revision to Previously Reported Financial Information - Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Decrease to retained earnings	$ (3,625,291)	$ (3,652,244)
Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Decrease to retained earnings		$ 43,618	$ 37,800	$ 28,800