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RELATED-PARTY TRANSACTIONS - Transactions Involving CS Financial and Jeffrey T. Seabold (Details) - USD ($) |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 31, 2016 | Nov. 02, 2015 | Apr. 06, 2015 | Oct. 31, 2014 | Oct. 31, 2013 | May 13, 2013 | Dec. 27, 2012 | Dec. 31, 2013
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Expenses from transactions with related parties |  |  | $ 263,000 |  |  |  |  |
Performance Shares |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Number of shares (in shares) |  |  |  |  | 92,781 |  |  |
CS Financial |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Shares paid as merger consideration (in shares) |  |  |  |  | 173,791 |  |  |
Par value of stocks issued (in dollars per share) |  |  |  |  | $ 0.01 |  |  |
Cash paid for acquisition |  |  |  |  | $ 1,500,000 |  |  |
Noninterest-bearing note |  |  |  |  | $ 3,200,000 |  |  |
Managing Director and Chief Lending Officer | CS Financial |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Shares paid as merger consideration (in shares) |  |  |  |  | 103,663 |  |  |
Managing Director and Chief Lending Officer | CS Financial | Performance Shares |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Shares paid as merger consideration (in shares) | 28,547 | 28,545 |  | 28,545 |  |  |  |
Brother of President and Chief Executive Officer | CS Financial |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Shares paid as merger consideration (in shares) |  |  |  |  | 16,140 |  |  |
Brother of President and Chief Executive Officer | CS Financial | Performance Shares |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Shares paid as merger consideration (in shares) | 1,083 | 1,082 |  | 1,082 |  |  |  |
Sister-in-Law of President and Chief Executive Officer | CS Financial |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Shares paid as merger consideration (in shares) |  |  |  |  | 16,140 |  |  |
Number of shares transferred from one related party to another related party (in shares) |  |  |  |  | 103,663 |  |  |
Sister-in-Law of President and Chief Executive Officer | CS Financial | Performance Shares |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Shares paid as merger consideration (in shares) | 1,083 | 1,082 |  | 1,082 |  |  |  |
Father of President and Chief Executive Officer | CS Financial |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Shares paid as merger consideration (in shares) |  |  |  |  | 3,228 |  |  |
Father of President and Chief Executive Officer | CS Financial | Performance Shares |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Shares paid as merger consideration (in shares) | 218 | 216 |  | 216 |  |  |  |
Certain Employees of Acquired Entity | CS Financial |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Shares paid as merger consideration (in shares) |  |  |  |  | 34,620 |  |  |
Management and Services Agreement | Managing Director and Chief Lending Officer |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |
Monthly compensation for services |  |  |  |  |  |  | $ 100,000 |
Employment agreement, term |  |  |  |  |  | 3 years |  |
Expenses from transactions with related parties |  |  |  |  |  |  |  | $ 439,000
Business acquisition, purchase price |  |  |  |  |  | $ 10,000,000 |  |

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