BORROWINGS, Outstanding Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total borrowings	$ 403,446	$ 440,122
Subordinated debt held by unconsolidated subsidiary trust, discount	381	405
Federal Home Loan Bank Overnight Advance [Member]
Debt Instrument [Line Items]
Total borrowings	301,300	338,000
Subordinated Debt Held By Unconsolidated Subsidiary Trust [Member]
Debt Instrument [Line Items]
Total borrowings	$ 102,146	$ 102,122