v3.8.0.1
Document and Entity Information - USD ($)
12 Months Ended
Mar. 31, 2018
Jun. 08, 2018
Sep. 30, 2017
Document And Entity Information      
Entity Registrant Name Castle Brands Inc    
Entity Central Index Key 0001311538    
Document Type 10-K    
Document Period End Date Mar. 31, 2018    
Amendment Flag false    
Current Fiscal Year End Date --03-31    
Entity a Well-known Seasoned Issuer No    
Entity a Voluntary Filer No    
Entity's Reporting Status Current Yes    
Entity Filer Category Accelerated Filer    
Entity Public Float     $ 99,826,917
Entity Common Stock, Shares Outstanding   167,694,801  
Trading Symbol ROX    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2018