Document and Entity Information - shares
6 Months Ended
Jun. 30, 2019
Aug. 05, 2019
Document And Entity Information    
Entity Registrant Name Atomera Inc  
Entity Central Index Key 0001420520  
Document Type 10-Q  
Document Period End Date Jun. 30, 2019  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity's Reporting Status Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   17,073,971
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2019  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Transition Period true  
Interactive Data Current Yes  
Entity Incorporation State Country Code DE  
Entity File Number 001-37850