Earnings per Share - Narrative (Details) - $ / shares	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Dividends declared and contractual dividends paid, basic (in dollars per share)	$ 0	$ 0	$ 0	$ 0
Dividends declared and contractual dividends paid, diluted (in dollars per share)	$ 0	$ 0	$ 0	$ 0

Dividends declared in the period and the contractual amount of dividends (or interest on participating income bonds) that must be paid per security, taking into account all dilutive potential common shares outstanding during the period.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 60B
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=125511455&loc=SL5780133-109256

Name:	us-gaap_EarningsPerShareDilutedDistributed
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration