Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16(a))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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

Debt - Seller Trust L Bonds (Details) - USD ($) $ in Thousands		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2021	Dec. 31, 2020	Aug. 10, 2018
Debt Instrument [Line Items]
Seller Trust L Bonds		$ 272,104	$ 272,104
Seller Trust L Bonds due 2023
Debt Instrument [Line Items]
Seller Trust L Bonds		272,100	$ 272,100	$ 366,900
Debt, weighted average interest rate				7.50%
Debt eliminated	$ 94,800	$ 94,800