Document and Entity Information
3 Months Ended
Mar. 31, 2015
May 05, 2015
Document And Entity Information    
Entity Registrant Name Applied Optoelectronics, Inc.  
Entity Central Index Key 0001158114  
Document Type 10-Q  
Document Period End Date Mar. 31, 2015  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Is Entity a Well-known Seasoned Issuer? No  
Is Entity a Voluntary Filer? No  
Is Entity's Reporting Status Current? Yes  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   14,940,596
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2015