| 
           COMMITMENTS AND CONTINGENCIES (Company's off-balance sheet obligations) (Details) (USD $) 
        In Thousands, unless otherwise specified  | 
        
           Mar. 31, 2013 
         | 
        
           Dec. 31, 2012 
         | 
      ||||
|---|---|---|---|---|---|---|
| Company's off-balance sheet obligations | ||||||
| Fixed | $ 57,931 | $ 59,867 | ||||
| Variable | 242,553 | 245,087 | ||||
| Total | 300,484 | 304,954 | ||||
| 
           Commitments to Extend Credit [Member] 
         | 
        ||||||
| Company's off-balance sheet obligations | ||||||
| Fixed | 46,699 | [1] | 48,618 | [1] | ||
| Variable | 242,553 | [1] | 245,087 | [1] | ||
| Total | 289,252 | [1] | 293,705 | [1] | ||
| 
           Standby Letters of Credit [Member] 
         | 
        ||||||
| Company's off-balance sheet obligations | ||||||
| Fixed | 11,232 | 11,249 | ||||
| Variable | ||||||
| Total | $ 11,232 | $ 11,249 | ||||
          
  | 
      ||||||