Consolidated Statements of Cash Flows (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Dec. 31, 2024	Mar. 31, 2025	Sep. 30, 2024
Statement of Cash Flows [Abstract]
Foreign currencies, cost	$ 7,973	$ 13,763	$ 7,973
Restricted foreign currencies, cost	$ 1,219	$ 0	$ 1,219

Amount of acquisition cost for cash and cash equivalents held in foreign currency. Excludes cash within disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalents include, but are not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section 45
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477796/946-210-45-21

Name:	us-gaap_CashHeldInForeignCurrencyAcquisitionCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration