| 
           COMMITMENTS AND CONTINGENCIES (Textual) (Details) (USD $) 
        In Thousands, unless otherwise specified  | 
        3 Months Ended | 1 Months Ended | 
|---|---|---|
| 
           Mar. 31, 2011 
         | 
        
           Jul. 31, 2012
 
          Covered Litigation [Member] 
         | 
      |
| Commitments and Contingencies (Textual) [Abstract] | ||
| Pre-tax gain on Class B shares | $ 3,200 | |
| Visa increased the litigation reserve | 150,000 | |
| Conversion ratio for the Class B shares resulting payment under swap contract | 56 | |
| Amount of settlement is finalized | $ 25 | 
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- Details 
          
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- Definition 
          Represents the conversion ratio under swap contract. No definition available. 
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- Definition 
          Represents the litigation reserve increased by the entity. No definition available. 
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- Definition 
          The difference between the carrying value and the sale price of equity securities, not separately or otherwise categorized as trading or available-for-sale. This element includes investments in which the entity holds a small ownership stake (generally, less than 20% of the shares outstanding) and cannot exert significant influence. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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