XML 11 R1.htm IDEA: XBRL DOCUMENT v3.6.0.2
Document and Entity Information - shares
 9 Months Ended
Dec. 31, 2016
Feb. 08, 2017
Document and Entity Information:    
Entity Registrant Name RIVERVIEW BANCORP INC  
Entity Central Index Key 0001041368  
Trading Symbol rvsb  
Current Fiscal Year End Date --03-31  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   22,510,890
Document Type 10-Q  
Document Period End Date Dec. 31, 2016  
Amendment Flag false  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q3