Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is 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 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483467/210-10-45-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-4

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

Investments (Schedule of Cash Equivalents) (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
Cash And Cash Equivalents [Line Items]
Cash equivalents	$ 9,534	$ 40,437	$ 93,723	$ 76,110
Cost [Member]
Cash And Cash Equivalents [Line Items]
Cash equivalents	2,591	6,954
Cost [Member] \| Institutional Money Market Funds [Member]
Cash And Cash Equivalents [Line Items]
Cash equivalents	2,591	6,954
Estimated Fair Value [Member]
Cash And Cash Equivalents [Line Items]
Cash equivalents	2,591	6,954
Estimated Fair Value [Member] \| Institutional Money Market Funds [Member]
Cash And Cash Equivalents [Line Items]
Cash equivalents	$ 2,591	$ 6,954