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SUBSEQUENT EVENTS - Additional Information (Details) |  |  | 1 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 14, 2015 USD ($) | Jul. 03, 2015 Branch | Aug. 07, 2015 $ / shares shares | Jun. 30, 2015 USD ($) $ / shares shares | Dec. 31, 2014 USD ($) | Nov. 30, 2010 shares | Nov. 01, 2010 $ / shares shares
Subsequent Event [Line Items] |  |  |  |  |  |  |
Loans transferred |  |  |  | $ 409,799,000 | $ 278,749,000 |  |
Deposits transferred |  |  |  | $ 52,820,000 | 0 |  |
Exercise price of warrants for non-voting common stock | $ / shares |  |  |  | $ 9.13 |  |  | $ 11.00
Bank-owned life insurance |  |  |  | $ 19,201,000 | $ 19,095,000 |  |
Tier 1 risk based capital including future event |  |  |  | 11.00% |  |  |
Common Stock | Class A Common Stock |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Issuance of shares of voting common stock | shares |  |  |  | 3,251,036 |  |  |
Tcw Shared Opportunity Fund |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Warrants issued | shares |  |  |  |  |  | 240,000 | 240,000
Exercise price of warrants for non-voting common stock | $ / shares |  |  |  |  |  |  | $ 11.00
Americas United Bank |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Loans transferred |  |  |  | $ 43,700,000 |  |  |
Deposits transferred |  |  |  | $ 52,800,000 |  |  |
Patriot Financial Group | Common Stock | Class A Common Stock |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Shares held by third party | shares |  |  |  | 3,100,564 |  |  |
Subsequent Event |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Number of branches sold | Branch |  | 2 |  |  |  |  |
Exercise price of warrants for non-voting common stock | $ / shares |  |  | $ 9.13 |  |  |  |
Bank-owned life insurance | $ 69,200,000 |  |  |  |  |  |
Increase is bank-owned life insurance | $ 50,000,000 |  |  |  |  |  |
Subsequent Event | Common Stock | Class B Common Stock |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Issuance of shares of voting common stock | shares |  |  | 70,690 |  |  |  |
Subsequent Event | Common Stock | Class A Common Stock |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Issuance of shares of voting common stock | shares |  |  | 70,690 |  |  |  |
Subsequent Event | Americas United Bank |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |
Number of branches sold | Branch |  | 2 |  |  |  |  |

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