XML 336 R106.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Fair Value Measurements - Schedule of Assets and Liabilities (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Mar. 04, 2024 | Dec. 31, 2023 | Dec. 27, 2023 | Dec. 31, 2022
--- | --- | --- | --- | --- | ---
Assets: |  |  |  |  |
Short-term investments | $ 69,431 |  | $ 71,230 |  | $ 69,448
Assets | 71,181 |  | 72,117 |  | 69,963
Liabilities: |  |  |  |  |
Derivative liability | 5,226 | $ 3,746 | 2,508 | $ 2,248 | 971
Liabilities | 5,226 |  | 2,508 |  | 971
Public Warrants |  |  |  |  |
Liabilities: |  |  |  |  |
Warrant liabilities | 1,399 |  | 1,555 |  |
Private Placement Warrants |  |  |  |  |
Liabilities: |  |  |  |  |
Warrant liabilities | 2,405 |  | 953 |  |
Level 1 |  |  |  |  |
Assets: |  |  |  |  |
Short-term investments | 842 |  | 849 |  | 0
Assets | 2,592 |  | 1,736 |  | 515
Liabilities: |  |  |  |  |
Derivative liability |  |  |  |  | 0
Liabilities | 1,399 |  | 1,555 |  | 0
Level 1 | Public Warrants |  |  |  |  |
Liabilities: |  |  |  |  |
Warrant liabilities | 1,399 |  | 1,555 |  |
Level 1 | Private Placement Warrants |  |  |  |  |
Liabilities: |  |  |  |  |
Warrant liabilities | 0 |  | 0 |  |
Level 2 |  |  |  |  |
Assets: |  |  |  |  |
Short-term investments | 68,589 |  | 70,381 |  | 69,448
Assets | 68,589 |  | 70,381 |  | 69,448
Liabilities: |  |  |  |  |
Derivative liability |  |  |  |  | 0
Liabilities | 2,405 |  | 953 |  | 0
Level 2 | Public Warrants |  |  |  |  |
Liabilities: |  |  |  |  |
Warrant liabilities | 0 |  | 0 |  |
Level 2 | Private Placement Warrants |  |  |  |  |
Liabilities: |  |  |  |  |
Warrant liabilities | 2,405 |  | 953 |  |
Level 3 |  |  |  |  |
Assets: |  |  |  |  |
Short-term investments | 0 |  | 0 |  | 0
Assets | 0 |  | 0 |  | 0
Liabilities: |  |  |  |  |
Derivative liability |  |  |  |  | 971
Liabilities | 1,422 |  | 0 |  | 971
Level 3 | Public Warrants |  |  |  |  |
Liabilities: |  |  |  |  |
Warrant liabilities | 0 |  | 0 |  |
Level 3 | Private Placement Warrants |  |  |  |  |
Liabilities: |  |  |  |  |
Warrant liabilities | 0 |  | 0 |  |
Money market mutual funds |  |  |  |  |
Assets: |  |  |  |  |
Money market mutual funds | 1,750 |  | 887 |  | 515
Money market mutual funds | Level 1 |  |  |  |  |
Assets: |  |  |  |  |
Money market mutual funds | 1,750 |  | 887 |  | 515
Money market mutual funds | Level 2 |  |  |  |  |
Assets: |  |  |  |  |
Money market mutual funds | 0 |  | 0 |  | 0
Money market mutual funds | Level 3 |  |  |  |  |
Assets: |  |  |  |  |
Money market mutual funds | $ 0 |  | $ 0 |  | $ 0

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

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes 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. + References No definition available. + Details
Name: | us-gaap_CashAndCashEquivalentsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483466/210-20-50-3 + Details
Name: | us-gaap_DerivativeLiabilitiesNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price. + References No definition available. + Details
Name: | us-gaap_WarrantsAndRightsOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=flyx_PublicWarrantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=flyx_PrivatePlacementWarrantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |