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

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Name:	us-gaap_RetainedEarningsAccumulatedDeficit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Basis of Presentation and Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jan. 01, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction to opening retained earnings	$ (69,422)	$ (133,384)	$ (134,119)
ASU 2016-03
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction to opening retained earnings		$ 735