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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2024
Mar. 05, 2025
Jun. 30, 2024
Document and Entity Information      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Document Transition Report false    
Entity File Number 0-04041    
Entity Registrant Name ALLIENT INC    
Entity Incorporation, State or Country Code CO    
Entity Tax Identification Number 84-0518115    
Entity Address, Address Line One 495 Commerce Drive    
Entity Address, City or Town Amherst    
Entity Address, State or Province NY    
Entity Address, Postal Zip Code 14228    
City Area Code 716    
Local Phone Number 242-8634    
Title of 12(b) Security Common stock    
Trading Symbol ALNT    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction Flag false    
Entity Shell Company false    
Entity Public Float     $ 358,901,285
Entity Common Stock, Shares Outstanding   16,844,836  
Documents Incorporated by Reference [Text Block]

Portions of the Registrant’s Proxy Statement for the 2025 Annual Meeting of Shareholders are incorporated into Part III.

    
Auditor Name Deloitte & Touche LLP    
Auditor Firm ID 34    
Auditor Location Williamsville, New York    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Entity Central Index Key 0000046129    
Amendment Flag false