XML 46 R1.htm IDEA: XBRL DOCUMENT v3.2.0.727
Document and Entity Information - shares
 9 Months Ended
Jun. 30, 2015
Jul. 31, 2015
Document and Entity Information    
Entity Registrant Name TIMBERLAND BANCORP INC,  
Document Type 10-Q  
Document Period End Date Jun. 30, 2015  
Amendment Flag false  
Entity Central Index Key 0001046050  
Current Fiscal Year End Date --09-30  
Entity Common Stock, Shares Outstanding   7,053,636
Entity Filer Category Smaller Reporting Company  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q3