Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Statement Of Cash Flows [Abstract]
Cash and cash equivalents	$ 12,742	$ 6,467
Cash and cash equivalents including cash denominated in foreign currency	1,462	1,899
Restricted cash and cash equivalents	$ 9,411	13,027
Restricted cash and cash equivalents including cash denominated in foreign currency		$ 131

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