XML 36 R1.htm IDEA: XBRL DOCUMENT v2.4.0.6
Document and Entity Information
 9 Months Ended
Sep. 30, 2012
Nov. 05, 2012
Document and Entity Information    
Entity Registrant Name FIRST FINANCIAL CORP /IN/  
Entity Central Index Key 0000714562  
Document Type 10-Q  
Document Period End Date Sep. 30, 2012  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   13,237,523
Document Fiscal Year Focus 2012  
Document Fiscal Period Focus Q3