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

Subsequent Event (Details) - Senior Notes - USD ($)	Mar. 31, 2021	Mar. 09, 2020	Oct. 02, 2018
Subsequent Event [Line Items]
Aggregate principal amount			$ 300,000,000.0
Ascribe Senior Notes
Subsequent Event [Line Items]
Aggregate principal amount		$ 34,400,000
Subsequent event \| Ascribe Senior Notes \| Ascribe Investments III LLC
Subsequent Event [Line Items]
Aggregate principal amount	$ 47,500,000