The Company and Basis of Presentation	3 Months Ended
Mar. 31, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
The Company and Basis of Presentation	1. The Company and Basis of Presentation The Company Alphatec Holdings, Inc. (the “Company”), through its wholly owned subsidiaries, Alphatec Spine, Inc. (“Alphatec Spine”) and SafeOp Surgical, Inc. (“SafeOp”), is a medical technology company that designs, develops, and markets technology for the treatment of spinal disorders associated with disease and degeneration, congenital deformities, and trauma. The Company markets its products in the U.S. via independent sales agents and a direct sales force. On September 1, 2016, the Company completed the sale of its international distribution operations and agreements (collectively, the “International Business”) to Globus Medical Ireland, Ltd., a subsidiary of Globus Medical, Inc., and its affiliated entities (collectively “Globus”). As a result of this transaction, the International Business has been excluded from continuing operations for all periods presented in the condensed consolidated financial statements and is reported as discontinued operations. See Note 4 for additional information on the divestiture of the International Business. Recent Developments Acquisition of EOS On December 16, 2020, the Company, entered into a Tender Offer Agreement (the “Tender Offer Agreement”) with EOS imaging S.A., a société anonyme organized and existing under the laws of France (“EOS”), pursuant to which the Company commenced a public tender offer (the “Offer”) to purchase all of the issued and outstanding ordinary shares, nominal value €0.01 per share (collectively, the “EOS Shares”), and outstanding convertible bonds (“OCEANEs”), of EOS. The Offer consists of a cash tender offer price of €2.45 (or approximately $2.99) per EOS Share and €7.01 (or approximately $8.55) per OCEANE (the “Offer Consideration”), for a total purchase price of up to $116.9 million. On March 2, 2021, the Company transferred $115.3 million (approximately €95.6 million) to an escrow account to fund the Offer. The Offer was filed with the Autorité des marches financiers (the “AMF”) on March 5, 2021 and cleared by the AMF on March 30, 2021. The opening of the Offer occurred on April 1, 2021. Certain shareholders of EOS, which currently control approximately 23% of the outstanding EOS Shares, collectively, have entered into Tender Commitments with the Company pursuant to which they have agreed, among other things, to tender their respective EOS Shares into the Offer, subject to certain conditions. These Tender Commitments will terminate if (i) the Tender Offer Agreement is terminated, (ii) the Offer is withdrawn by the Company pursuant to applicable French laws and regulations, or (iii) the Offer is not declared successful by the AMF as a result of certain conditions failing to be met or waived. Basis of Presentation The accompanying condensed consolidated balance sheet as of December 31, 2020, which has been derived from audited financial statements, and the unaudited interim condensed consolidated financial statements for the period ended March 31, 2021 have been prepared by the Company in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and the rules and regulations of the Securities and Exchange Commission (“SEC”) pertaining to a quarterly report on Form 10-Q. Certain information and note disclosures normally included in annual audited financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to the interim-period-reporting provisions of U.S. GAAP and the SEC. The Company believes that the disclosures made in this Quarterly Report on Form 10-Q are adequate to make the information not misleading. The unaudited interim condensed consolidated financial statements reflect all adjustments, including normal recurring adjustments which, in the opinion of management, are necessary for a fair statement of the financial position and results of operations for the periods presented. These unaudited condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements for the year ended December 31, 2020, which are included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020 that was filed with the SEC on March 5, 2021. Operating results for the three months ended March 31, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021, or any other future periods. Reclassification Certain amounts in the condensed consolidated financial statements for the three months ended March 31, 2020 have been reclassified to conform to the current period’s presentation. These reclassifications were immaterial and had no impact on previously reported results of operations or accumulated deficit.

The Company and Basis of Presentation

3 Months Ended

Mar. 31, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

1. The Company and Basis of Presentation

The Company

Alphatec Holdings, Inc. (the “Company”), through its wholly owned subsidiaries, Alphatec Spine, Inc. (“Alphatec Spine”) and SafeOp Surgical, Inc. (“SafeOp”), is a medical technology company that designs, develops, and markets technology for the treatment of spinal disorders associated with disease and degeneration, congenital deformities, and trauma. The Company markets its products in the U.S. via independent sales agents and a direct sales force.

On September 1, 2016, the Company completed the sale of its international distribution operations and agreements (collectively, the “International Business”) to Globus Medical Ireland, Ltd., a subsidiary of Globus Medical, Inc., and its affiliated entities (collectively “Globus”). As a result of this transaction, the International Business has been excluded from continuing operations for all periods presented in the condensed consolidated financial statements and is reported as discontinued operations. See Note 4 for additional information on the divestiture of the International Business.

Recent Developments

Acquisition of EOS

On December 16, 2020, the Company, entered into a Tender Offer Agreement (the “Tender Offer Agreement”) with EOS imaging S.A., a société anonyme organized and existing under the laws of France (“EOS”), pursuant to which the Company commenced a public tender offer (the “Offer”) to purchase all of the issued and outstanding ordinary shares, nominal value €0.01 per share (collectively, the “EOS Shares”), and outstanding convertible bonds (“OCEANEs”), of EOS. The Offer consists of a cash tender offer price of €2.45 (or approximately $2.99) per EOS Share and €7.01 (or approximately $8.55) per OCEANE (the “Offer Consideration”), for a total purchase price of up to $116.9 million. On March 2, 2021, the Company transferred $115.3 million (approximately €95.6 million) to an escrow account to fund the Offer. The Offer was filed with the Autorité des marches financiers (the “AMF”) on March 5, 2021 and cleared by the AMF on March 30, 2021. The opening of the Offer occurred on April 1, 2021. Certain shareholders of EOS, which currently control approximately 23% of the outstanding EOS Shares, collectively, have entered into Tender Commitments with the Company pursuant to which they have agreed, among other things, to tender their respective EOS Shares into the Offer, subject to certain conditions. These Tender Commitments will terminate if (i) the Tender Offer Agreement is terminated, (ii) the Offer is withdrawn by the Company pursuant to applicable French laws and regulations, or (iii) the Offer is not declared successful by the AMF as a result of certain conditions failing to be met or waived.

Basis of Presentation

The accompanying condensed consolidated balance sheet as of December 31, 2020, which has been derived from audited financial statements, and the unaudited interim condensed consolidated financial statements for the period ended March 31, 2021 have been prepared by the Company in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and the rules and regulations of the Securities and Exchange Commission (“SEC”) pertaining to a quarterly report on Form 10-Q. Certain information and note disclosures normally included in annual audited financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to the interim-period-reporting provisions of U.S. GAAP and the SEC. The Company believes that the disclosures made in this Quarterly Report on Form 10-Q are adequate to make the information not misleading. The unaudited interim condensed consolidated financial statements reflect all adjustments, including normal recurring adjustments which, in the opinion of management, are necessary for a fair statement of the financial position and results of operations for the periods presented. These unaudited condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements for the year ended December 31, 2020, which are included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020 that was filed with the SEC on March 5, 2021. Operating results for the three months ended March 31, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021, or any other future periods.

Reclassification

Certain amounts in the condensed consolidated financial statements for the three months ended March 31, 2020 have been reclassified to conform to the current period’s presentation. These reclassifications were immaterial and had no impact on previously reported results of operations or accumulated deficit.