Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121573735&loc=d3e41502-112717

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 55
-Paragraph 40
-Subparagraph (Note 3)
-URI http://asc.fasb.org/extlink&oid=121580752&loc=d3e38371-112697

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

Commitments and Contingencies Lease Expense (Details) $ in Millions			9 Months Ended
	Sep. 05, 2020 option	Jul. 27, 2020 option	Sep. 30, 2020 USD ($)
Other Ownership Interests [Line Items]
Lessor Operating Lease Option To Extend, Term	5 years		5 years
Number of extension	2
McKellar Ct. [Member]
Other Ownership Interests [Line Items]
Lessor Operating Lease Option To Extend, Term		5 years
Operating Leases, Future Minimum Payments Due \| $			$ 51.2
Number of extension		2