Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Name:	us-gaap_RestrictedCashAndCashEquivalents
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Supplemental Cash Flow Information (Schedule Of Disaggregation Of Cash, Cash Equivalents And Restricted Cash) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019
Cash And Cash Equivalents [Line Items]
Cash and cash equivalents	$ 206,251		$ 217,671	$ 50,719
Restricted cash	60,803		14,814	84,360
Cash, cash equivalents and restricted cash	267,054	$ 215,911	232,485	135,079	$ 110,799	$ 121,511
Continuing [Member]
Cash And Cash Equivalents [Line Items]
Cash and cash equivalents	206,251		217,671	19,390
Discontinued [Member]
Cash And Cash Equivalents [Line Items]
Cash and cash equivalents	$ 0		$ 0	$ 31,329