XML 78 R67.htm IDEA: XBRL DOCUMENT
v3.25.3

NOTES PAYABLE AND COMMITMENTS AND CONTINGENCIES - Contingent Guarantee (Details) - USD ($) |  |  |  | 5 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 09, 2024 | Feb. 09, 2024 | Feb. 07, 2024 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2025 | Jun. 30, 2023
NOTES PAYABLE AND COMMITMENTS AND CONTINGENCIES |  |  |  |  |  |  |
Value of founder shares transferred to cover cash deficit |  |  | $ 4,000,000 |  |  |  |
Contingent guarantee |  |  |  | $ 3,256,863 |  |  | $ 3,256,863
Shares of Founder Shares Transferred |  | 885,010 |  |  |  |  |
Value of founder shares transferred |  | $ 4,000,000 |  |  | $ 1,210,290 |  |
Contingent Guarantee Deemed Value |  | 0 |  |  |  |  |
Amount of cash recovered through transfer of shares |  |  |  | $ 743,137 |  |  |
Shares issued as deposit for purchase of the Commercial Bank acquisition (in shares) |  |  |  |  |  | 1,234,990 |
Reduction in the contingent guarantee |  |  |  |  |  | $ 1,210,290 |
Stock Issued for Contingent Guarantee | $ 2,886,347 |  |  |  |  |  |
Percentage of convenience fees | 5.00% |  |  |  |  |  |
Amount of convertible notes issued | $ 3,030,665 |  |  |  |  |  |
Principal amount of guarantee to be converted |  |  |  |  |  | $ 1,439,586 |
Shares issued upon conversion of guarantee |  |  |  |  |  | 256,091 |
Initial value of derivative included in merger financing |  |  |  |  |  | $ 113,044 |
Interest expense on the principal |  |  |  |  |  | 307,801 |
Amortization of debt discount |  |  |  |  |  | 88,830 |
Derivative liability, carrying balance |  |  |  |  | $ 1,618,575 | 1,618,575 |
Unamortized debt discount |  |  |  |  |  | $ 24,215 |
Short term |  |  |  |  |  |  |
NOTES PAYABLE AND COMMITMENTS AND CONTINGENCIES |  |  |  |  |  |  |
Value of founder shares transferred |  | $ 8,850,100 |  |  |  |  |
Sellers note |  |  |  |  |  |  |
NOTES PAYABLE AND COMMITMENTS AND CONTINGENCIES |  |  |  |  |  |  |
Shares issued as conversion in principle on convertible notes (in shares) |  |  |  |  |  | 34,931,855 |

X
- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related contingent guarantee. + References No definition available. + Details
Name: | atch_AmortizationOfDebtDiscountPremiumContingentGuarantee
Namespace Prefix: | atch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of cash recovered through transfer of shares. + References No definition available. + Details
Name: | atch_AmountOfCashRecoveredThroughTransferOfShares
Namespace Prefix: | atch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of contingent guarantee as a financial liability payable within the next twelve months. + References No definition available. + Details
Name: | atch_ContingentGuarantee
Namespace Prefix: | atch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of contingent guarantee deemed value. + References No definition available. + Details
Name: | atch_ContingentGuaranteeDeemedValue
Namespace Prefix: | atch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The percentage of convenience fees on issuance of convertible note. + References No definition available. + Details
Name: | atch_ConvenienceFeePercentage
Namespace Prefix: | atch_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The net amount of convertible notes issued by the company in order to settle contingent guarantee that have not been recovered, including convenience fee. + References No definition available. + Details
Name: | atch_ConvertibleNotesIssuedForContingentConsideration
Namespace Prefix: | atch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction associated with contingent guarantee. + References No definition available. + Details
Name: | atch_DebtConversionConvertedInstrumentSharesIssuedContingentGuarantee
Namespace Prefix: | atch_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the original debt being converted in a noncash (or part noncash) transaction associated with contingent guarantee. + References No definition available. + Details
Name: | atch_DebtConversionOriginalDebtAmountContingentGuarantee
Namespace Prefix: | atch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of embedded derivative liability at the time of issuance. + References No definition available. + Details
Name: | atch_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiabilitys
Namespace Prefix: | atch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period in the amount of contingent guarantee. + References No definition available. + Details
Name: | atch_IncreaseDecreaseContingentGuarantee
Namespace Prefix: | atch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of interest expense on contingent guarantee. + References No definition available. + Details
Name: | atch_InterestOnContingentGuarantee
Namespace Prefix: | atch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of merger financing related to convertible notes classified as noncurrent. + References No definition available. + Details
Name: | atch_MergerFinancingConvertibleNoteNoncurrent
Namespace Prefix: | atch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of founder shares transferred. + References No definition available. + Details
Name: | atch_SharesOfFounderSharesTransferred
Namespace Prefix: | atch_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The value of stock issued in order to modify the terms of contingent + References No definition available. + Details
Name: | atch_StockIssuedForContingentGuarantee
Namespace Prefix: | atch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, after accumulated amortization, of debt discount (premium) associated with the related contingent guarantee. + References No definition available. + Details
Name: | atch_UnamortizedDiscountPremiumContingentGuarantee
Namespace Prefix: | atch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The value of founder shares transferred. + References No definition available. + Details
Name: | atch_ValueOfFounderSharesTransferred
Namespace Prefix: | atch_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The value of founder shares transferred to cover the cash deficit. + References No definition available. + Details
Name: | atch_ValueOfFounderSharesTransferredToCoverCashDeficit
Namespace Prefix: | atch_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-9 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-4 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-9 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 720 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483359/720-20-50-1 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 27 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482395/460-10-55-27 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-9 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-4 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-3 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-1 + Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares of stock issued during the period pursuant to acquisitions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesAcquisitions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares issued during the period as a result of the conversion of convertible securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1E -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1E Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-3 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=us-gaap_ShortTermDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=atch_SellersNoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |