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Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2024
Feb. 19, 2025
Jun. 28, 2024
Cover [Abstract]      
Entity Registrant Name ALPHATEC HOLDINGS, INC.    
Entity Central Index Key 0001350653    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Document Type 10-K    
Trading Symbol ATEC    
Document Period End Date Dec. 31, 2024    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus (Q1,Q2,Q3,FY) FY    
Amendment Flag false    
Entity Well-known Seasoned Issuer Yes    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Common Stock, Shares Outstanding   144,149,232  
Entity Public Float     $ 1.0
Entity Emerging Growth Company false    
Entity Small Business false    
Entity Shell Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity File Number 000-52024    
Entity Tax Identification Number 20-2463898    
Entity Address, Address Line One 1950 Camino Vida Roble    
Entity Address, City or Town Carlsbad    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 92008    
City Area Code 760    
Local Phone Number 431-9286    
Document Annual Report true    
Document Transition Report false    
Entity Incorporation, State or Country Code DE    
Entity Interactive Data Current Yes    
Title of 12(b) Security Common Stock, par value $0.0001 per share    
Security Exchange Name NASDAQ    
Auditor Firm ID 34    
Auditor Name Deloitte & Touche LLP    
Auditor Location New York, New York, United States    
Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE

The following documents (or parts thereof) are incorporated by reference into the following parts of this Form 10-K: Certain information required in Part III of this Annual Report on Form 10-K is incorporated from the Registrant’s Proxy Statement for the 2025 Annual Meeting of Stockholders.

    
Auditor Opinion

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Alphatec Holdings, Inc. and subsidiaries (the "Company") as of December 31, 2024 and 2023, the related consolidated statements of operations, comprehensive loss, stockholders' equity (deficit), and cash flows, for each of the three years in the period ended December 31, 2024, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2024 and 2023, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2024, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2024, based on criteria established in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 26, 2025, expressed an unqualified opinion on the Company's internal control over financial reporting.