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BORROWINGS, Outstanding Borrowings (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Debt Instrument [Line Items] |  |
Total borrowings | $ 248,370 | $ 403,446
Subordinated debt held by unconsolidated subsidiary trust, discount | 357 | 381
Federal Home Loan Bank Overnight Advance [Member] |  |
Debt Instrument [Line Items] |  |
Total borrowings | 146,200 | 301,300
Subordinated Debt Held By Unconsolidated Subsidiary Trust [Member] |  |
Debt Instrument [Line Items] |  |
Total borrowings | $ 102,170 | $ 102,146

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