Accounting Policies, by Policy (Policies)	6 Months Ended
Jun. 30, 2025
BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Basis of presentation	The condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“US GAAP”). These policies have been consistently applied to all the periods presented, unless otherwise stated. The accompanying condensed consolidated financial statements of the Company are unaudited. In the opinion of management, all adjustments necessary for a fair statement of results of operations, cash flows, and financial position have been made. The results of operations for the three and six months ended June 30, 2025 and 2024 are not necessarily indicative of results that may be expected for the full year or any other subsequent interim period. Unless noted otherwise, all dollar amounts are in thousands of United States dollars (“US dollars” or “$”). Some amounts may not reconcile due to rounding. For the three and six months ended June 30, 2024, the condensed consolidated financial statements reflect the consolidated results of operations, comprehensive loss, cash flows, and changes in equity of ATPL and its wholly-owned subsidiaries. The Condensed Consolidated Balance Sheet as of December 31, 2024 presents the financial condition of the Company and its consolidated subsidiaries. In accordance with ASC 805, Business Combinations, ATPL’s historical equity has been retrospectively restated for all periods up to December 16, 2024, the closing date of the reverse recapitalization (the “Closing Date”) to reflect the number of shares of Common Stock issued to legacy ATPL shareholders in connection with the reverse recapitalization. Additionally, the par value of Common Stock has been restated to align with the post-transaction capital structure. The Company is an emerging growth company (“EGC”), as defined in Section 2(a) of the Securities Act of 1933, as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), which permits the Company to utilize an extended transition period to comply with new or revised accounting standards applicable to public companies. The preparation of financial statements in conformity with US GAAP requires management to make judgments, estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Management bases its judgments, estimates and assumptions on historical experience and on other various factors, including expectations of future events that management believe to be reasonable under the circumstances. Actual results could differ from those estimates due to risks and uncertainties. The accounting policies adopted in the preparation of the condensed consolidated financial statements are consistent with those adopted and disclosed in the Group’s (defined below) financial statements for the year ended December 31, 2024, and therefore these condensed consolidated financial statements do not include all information and footnote disclosures normally included in the annual consolidated financial statements. The financial information included herein should be read in conjunction with the consolidated financial statements and related notes for the year ended December 31, 2024 as included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024 filed with the U.S. Securities and Exchange Commission (the “SEC”) on March 12, 2025, and amended on April 29, 2025 (the “Annual Report”). There have been no material changes to the Company's significant accounting policies from those described in the consolidated financial statements for the year ended December 31, 2024 as included in the Annual Report.
Principles of consolidation	(a) Principles of consolidation The condensed consolidated financial statements include the accounts of ATGC, its wholly-owned subsidiaries, entities for which the Company has a controlling financial interest, as well as any variable interest entities (“VIEs”) for which ATGC has been determined to be the primary beneficiary. ATGC and its subsidiaries together are referred to in these financial statements as the “Group”. Subsidiaries are all those entities over which the Group has control. Control is the power to govern the financial and operating policies of an entity. All subsidiaries of ATGC have a reporting year end of December 31. Intercompany transactions, balances and unrealized gains or losses on transactions between entities in the Group are eliminated.
Recently Adopted Accounting Standards	(b) Recently Adopted Accounting Standards In June 2022, the FASB issued ASU 2022-03, Fair Value Measurement (Topic 820) Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions. ASU 2022-03 clarifies guidance for fair value measurement of an equity security subject to a contractual sale restriction and establishes new disclosure requirements for such equity securities. This ASU was effective January 1, 2025 for smaller reporting companies. The Company has assessed the impact of adopting this accounting guidance and has determined that it does not impact the fair value measurement of our existing equity securities. Nevertheless, the Company will apply the guidance and incorporate the new required disclosures in future filings as needed.
New Accounting Standards Not Yet Adopted	(c) New Accounting Standards Not Yet Adopted The FASB has issued several new accounting pronouncements during the first six months of 2025 which the Company has reviewed. Based on this assessment, the Company has determined that there are no new accounting pronouncements issued but not yet adopted that would have a material impact on the Company's financial position, results of operations, or cash flows. For further details on new accounting pronouncements issued in prior years but not yet adopted, refer to note 2(aa) in the consolidated financial statements for the year ended December 31, 2024.

Accounting Policies, by Policy (Policies)

6 Months Ended

Jun. 30, 2025

BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]

The condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“US GAAP”). These policies have been consistently applied to all the periods presented, unless otherwise stated. The accompanying condensed consolidated financial statements of the Company are unaudited. In the opinion of management, all adjustments necessary for a fair statement of results of operations, cash flows, and financial position have been made. The results of operations for the three and six months ended June 30, 2025 and 2024 are not necessarily indicative of results that may be expected for the full year or any other subsequent interim period.

Unless noted otherwise, all dollar amounts are in thousands of United States dollars (“US dollars” or “$”). Some amounts may not reconcile due to rounding.

For the three and six months ended June 30, 2024, the condensed consolidated financial statements reflect the consolidated results of operations, comprehensive loss, cash flows, and changes in equity of ATPL and its wholly-owned subsidiaries. The Condensed Consolidated Balance Sheet as of December 31, 2024 presents the financial condition of the Company and its consolidated subsidiaries.

In accordance with ASC 805, Business Combinations, ATPL’s historical equity has been retrospectively restated for all periods up to December 16, 2024, the closing date of the reverse recapitalization (the “Closing Date”) to reflect the number of shares of Common Stock issued to legacy ATPL shareholders in connection with the reverse recapitalization. Additionally, the par value of Common Stock has been restated to align with the post-transaction capital structure.

The Company is an emerging growth company (“EGC”), as defined in Section 2(a) of the Securities Act of 1933, as modified by the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”), which permits the Company to utilize an extended transition period to comply with new or revised accounting standards applicable to public companies.

The preparation of financial statements in conformity with US GAAP requires management to make judgments, estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Management bases its judgments, estimates and assumptions on historical experience and on other various factors, including expectations of future events that management believe to be reasonable under the circumstances. Actual results could differ from those estimates due to risks and uncertainties.

The accounting policies adopted in the preparation of the condensed consolidated financial statements are consistent with those adopted and disclosed in the Group’s (defined below) financial statements for the year ended December 31, 2024, and therefore these condensed consolidated financial statements do not include all information and footnote disclosures normally included in the annual consolidated financial statements. The financial information included herein should be read in conjunction with the consolidated financial statements and related notes for the year ended December 31, 2024 as included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024 filed with the U.S. Securities and Exchange Commission (the “SEC”) on March 12, 2025, and amended on April 29, 2025 (the “Annual Report”).

There have been no material changes to the Company's significant accounting policies from those described in the consolidated financial statements for the year ended December 31, 2024 as included in the Annual Report.

Principles of consolidation

(a)

Principles of consolidation

The condensed consolidated financial statements include the accounts of ATGC, its wholly-owned subsidiaries, entities for which the Company has a controlling financial interest, as well as any variable interest entities (“VIEs”) for which ATGC has been determined to be the primary beneficiary. ATGC and its subsidiaries together are referred to in these financial statements as the “Group”.

Subsidiaries are all those entities over which the Group has control. Control is the power to govern the financial and operating policies of an entity. All subsidiaries of ATGC have a reporting year end of December 31.

Intercompany transactions, balances and unrealized gains or losses on transactions between entities in the Group are eliminated.

Recently Adopted Accounting Standards

(b)

Recently Adopted Accounting Standards

In June 2022, the FASB issued ASU 2022-03, Fair Value Measurement (Topic 820) Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions. ASU 2022-03 clarifies guidance for fair value measurement of an equity security subject to a contractual sale restriction and establishes new disclosure requirements for such equity securities. This ASU was effective January 1, 2025 for smaller reporting companies. The Company has assessed the impact of adopting this accounting guidance and has determined that it does not impact the fair value measurement of our existing equity securities. Nevertheless, the Company will apply the guidance and incorporate the new required disclosures in future filings as needed.

New Accounting Standards Not Yet Adopted

(c)

New Accounting Standards Not Yet Adopted

The FASB has issued several new accounting pronouncements during the first six months of 2025 which the Company has reviewed. Based on this assessment, the Company has determined that there are no new accounting pronouncements issued but not yet adopted that would have a material impact on the Company's financial position, results of operations, or cash flows.

For further details on new accounting pronouncements issued in prior years but not yet adopted, refer to note 2(aa) in the consolidated financial statements for the year ended December 31, 2024.