XML 15 R7.htm IDEA: XBRL DOCUMENT
v3.26.1

Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2026 USD ($)
Statement of Stockholders' Equity [Abstract] |
Underwriter discounts | $ 9,000
Issuance costs | $ 627

X
- Definition Payments for underwriter discounts. + References No definition available. + Details
Name: | alxo_PaymentsForUnderwriterDiscounts
Namespace Prefix: | alxo_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-15 + Details
Name: | us-gaap_PaymentsOfStockIssuanceCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_StatementOfStockholdersEquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration