XML 67 R60.htm IDEA: XBRL DOCUMENT
v3.26.1

Common Stock - Schedule of Shares of Common Stock for Future Issuance (Detail) - shares | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Disclosure in Tabular form of Common Stock Shares Reserved for Future Issuance [Line Items] |  |
Common stock capital shares reserved for future issuance | 6,504,138 | 4,762,664
Shares reserved for warrants [Member] |  |
Disclosure in Tabular form of Common Stock Shares Reserved for Future Issuance [Line Items] |  |
Common stock capital shares reserved for future issuance | 18,144 | 18,144
Pre-funded warrants [Member] |  |
Disclosure in Tabular form of Common Stock Shares Reserved for Future Issuance [Line Items] |  |
Common stock capital shares reserved for future issuance | 1,175,654 | 0
Shares reserved for stock option exercises [Member] |  |
Disclosure in Tabular form of Common Stock Shares Reserved for Future Issuance [Line Items] |  |
Common stock capital shares reserved for future issuance | 2,252,380 | 2,186,531
Restricted Stock [Member] |  |
Disclosure in Tabular form of Common Stock Shares Reserved for Future Issuance [Line Items] |  |
Common stock capital shares reserved for future issuance | 599,326 | 317,213
Shares reserved for future issuance under the 2024 Stock Incentive Plan |  |
Disclosure in Tabular form of Common Stock Shares Reserved for Future Issuance [Line Items] |  |
Common stock capital shares reserved for future issuance | 2,087,241 | 1,997,963
Shares reserved for future issuance under the 2024 Employee Stock Purchase Plan |  |
Disclosure in Tabular form of Common Stock Shares Reserved for Future Issuance [Line Items] |  |
Common stock capital shares reserved for future issuance | 371,393 | 242,813

X
- Definition Disclosure in tabular form of common stock shares reserved for future issuance. + References No definition available. + Details
Name: | qttb_DisclosureInTabularFormOfCommonStockSharesReservedForFutureIssuanceLineItems
Namespace Prefix: | qttb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-3 + Details
Name: | us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_WarrantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=qttb_Pre-FundedWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=qttb_ReservedForFutureIssuanceUnderTwoThousandAndTwentyFourStockPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=qttb_ReservedForFutureIssuanceUnderTwoThousandAndTwentyFourEmployeeStockPurchasePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |