XML 11 R1.htm IDEA: XBRL DOCUMENT v3.25.1
Document And Entity Information - shares
 3 Months Ended
Mar. 31, 2025
May 01, 2025
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2025  
Document Transition Report false  
Entity File Number 1-10526  
Entity Registrant Name UNITED-GUARDIAN, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 11-1719724  
Entity Address, Address Line One 230 Marcus Boulevard  
Entity Address, City or Town Hauppauge  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 11788  
City Area Code 631  
Local Phone Number 273-0900  
Title of 12(b) Security Common Stock, $0.10 par value per share  
Trading Symbol UG  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding (in shares)   4,594,319
Entity Central Index Key 0000101295  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q1  
Amendment Flag false