| 
           ACQUISITIONS (Business Acquisition, Pro Forma Information) (Details) (USD $) 
        In Thousands, unless otherwise specified  | 
        3 Months Ended | 9 Months Ended | 
|---|---|---|
| 
           Sep. 30, 2013 
         | 
        
           Sep. 30, 2013 
         | 
      |
| ACQUISITIONS [Abstract] | ||
| Total revenues (net interest income plus noninterest income) | $ 82,180 | $ 246,972 | 
| Net income | $ 17,827 | $ 54,834 | 
| X | ||||||||||
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- Definition 
          The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
| 
             
- Definition 
          The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Details 
          
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