Face (par) amount of debt instrument at time of issuance.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

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

Commitments and Contingencies (Details) - USD ($)	1 Months Ended	12 Months Ended
Commitments and Contingencies (Details) - USD ($)	Aug. 31, 2020	Dec. 31, 2020	Jan. 12, 2018
Loss Contingencies [Line Items]
Payments for settlements		$ 7,300,000
Income tax carryback claims	$ 19,000,000
Promissory note
Loss Contingencies [Line Items]
Debt instrument, face amount			$ 25,000,000