Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v2.4.0.6
Document and Entity Information (USD $)
12 Months Ended
Dec. 31, 2012
Jan. 31, 2013
Jun. 30, 2012
Entity Registrant Name NORTHWEST INDIANA BANCORP    
Entity Central Index Key 0000919864    
Current Fiscal Year End Date --12-31    
Entity Filer Category Smaller Reporting Company    
Trading Symbol nwin    
Entity Common Stock, Shares Outstanding   2,837,396  
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2012    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2012    
Entity Well-Known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 41,311,739