DEPOSITS (Narrative) (Details) - USD ($) $ in Thousands  | 
12 Months Ended | |
|---|---|---|
Dec. 31, 2016  | 
Dec. 31, 2015  | 
|
| Cash and Cash Equivalents [Line Items] | ||
| Time deposits held in Certificates of Deposit | $ 1,192,575 | |
| Deposit overdrafts as other consumer loans | 1,200 | $ 1,200 | 
| CDARS | ||
| Cash and Cash Equivalents [Line Items] | ||
| Time deposits held in Certificates of Deposit | $ 1,000 | $ 4,900 | 
| Maximum | CDARS | ||
| Cash and Cash Equivalents [Line Items] | ||
| Maturity of deposits held in Certificate of Deposits | 1 year | 
| X | ||||||||||
- Definition Deposit overdraft. No definition available. 
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- Definition Maturity of time deposit. No definition available. 
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| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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| X | ||||||||||
- Definition Amount of time deposit liabilities, including certificates of deposit. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
- Details 
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- Details 
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