FAIR VALUE MEASUREMENTS (Narrative) (Details)  | 
12 Months Ended | ||
|---|---|---|---|
| 
 Dec. 31, 2019  
USD ($)  
item 
 | 
 Dec. 31, 2018  
USD ($) 
 | 
 Dec. 31, 2017  
USD ($) 
 | 
|
| Fair Value Disclosures [Abstract] | |||
| Minimum number of market participants | item | 4,000 | ||
| Level 3 Fair value measurements weighted average related to impaired loans | 5.90% | 5.30% | |
| Level 3 fair value measurements weighted average related to foreclosed property | 4.50% | 3.70% | |
| Level 3 fair value measurements weighted average related to former bank premises | 0.00% | 0.00% | |
| Total valuation expenses related to foreclosed properties | $ 921,000 | $ 1,300,000 | $ 1,600,000 | 
| Total Valuation expenses related to former bank premises | 985,000 | $ 0 | $ 339,000 | 
| Loans held for sale, at fair value | $ 55,405,000 | ||
| X | ||||||||||
- Definition Level 3 fair value measurements weighted average related to foreclosed property. No definition available. 
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- Definition Level 3 fair value measurements weighted average related to former bank premises. No definition available. 
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- Definition Level 3 fair value measurements weighted average related to impaired loans. No definition available. 
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- Definition Minimum number of market participants. No definition available. 
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- Definition Valuation Expenses Related to Foreclosed Properties No definition available. 
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| X | ||||||||||
- Definition Valuation Expenses Related to Former Bank Premises No definition available. 
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| X | ||||||||||
- References No definition available. 
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- Definition Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables. No definition available. 
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