Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19-26)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

Variable Interest Entities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2015
Variable Interest Entity [Line Items]
Contribution liability	$ 2,482,716	$ 2,337,665
Cloverleaf
Variable Interest Entity [Line Items]
Original benefit of contribution by tax credit investor's			$ 5,600
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Contribution liability	$ 4,800	$ 4,900