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RELATED-PARTY TRANSACTIONS - Transactions Involving CS Financial Acquisition (Details) - USD ($)
$ / shares in Units, $ in Millions
Oct. 31, 2016
Nov. 02, 2015
Oct. 31, 2014
Oct. 31, 2013
Performance Shares        
Related Party Transaction [Line Items]        
Number of shares       92,781
CS Financial        
Related Party Transaction [Line Items]        
Shares paid as merger consideration       173,791
Par value of stocks issued (in dollars per share)       $ 0.01
Cash paid for acquisition       $ 1.5
Noninterest-bearing note       $ 3.2
CS Financial | Managing Director and Chief Lending Officer        
Related Party Transaction [Line Items]        
Shares paid as merger consideration       103,663
CS Financial | Managing Director and Chief Lending Officer | Performance Shares        
Related Party Transaction [Line Items]        
Shares paid as merger consideration 28,547 28,545 28,545  
CS Financial | Brother of President and Chief Executive Officer        
Related Party Transaction [Line Items]        
Shares paid as merger consideration       16,140
CS Financial | Brother of President and Chief Executive Officer | Performance Shares        
Related Party Transaction [Line Items]        
Shares paid as merger consideration 1,083 1,082 1,082  
CS Financial | Sister-in-Law of President and Chief Executive Officer        
Related Party Transaction [Line Items]        
Shares paid as merger consideration       16,140
Number of shares transferred from one related party to another related party       103,663
CS Financial | Sister-in-Law of President and Chief Executive Officer | Performance Shares        
Related Party Transaction [Line Items]        
Shares paid as merger consideration 1,083 1,082 1,082  
CS Financial | Father of President and Chief Executive Officer        
Related Party Transaction [Line Items]        
Shares paid as merger consideration       3,228
CS Financial | Father of President and Chief Executive Officer | Performance Shares        
Related Party Transaction [Line Items]        
Shares paid as merger consideration 218 216 216  
CS Financial | Certain Employees of Acquired Entity        
Related Party Transaction [Line Items]        
Shares paid as merger consideration       34,620