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RELATED-PARTY TRANSACTIONS - PL Capital Affiliates (Details) - USD ($) $ in Thousands |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Apr. 06, 2015 | Mar. 31, 2017 | Feb. 10, 2017 | Feb. 08, 2017
Related Party Transaction [Line Items] |  |  |  |
Expenses from transactions with related parties | $ 263 |  |  |
Greater Than 5% Shareholder, PL Capital Advisors, LLC |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Ownership percentage |  |  | 6.90% |
Expenses from transactions with related parties |  | $ 150 |  |
Voting Common Stock | Greater Than 5% Shareholder, PL Capital Advisors, LLC |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Common stock, shares outstanding (in shares) |  |  | 3,401,719 |
Company ownership percentage maximum threshold |  |  |  | 10.00%

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