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FAIR VALUE MEASUREMENTS (Details 2) (USD $)
6 Months Ended 9 Months Ended
Jan. 31, 2014
Apr. 30, 2014
Jul. 31, 2013
Apr. 30, 2013
Apr. 30, 2014
Level 3
Apr. 30, 2014
Level 3
Minimum
Apr. 30, 2014
Level 3
Maximum
Jan. 31, 2014
Peoples Jewellers
Jan. 31, 2014
Peoples Jewellers
Minimum
Jan. 31, 2014
Piercing Pagoda
Jan. 31, 2014
Piercing Pagoda
Minimum
FAIR VALUE MEASUREMENTS                      
Impairment of goodwill $ 0                    
GOODWILL                      
Goodwill   $ 93,621,000 $ 98,372,000 $ 99,975,000       $ 74,200,000   $ 19,400,000  
Percentage of excess of fair value of goodwill over carrying value, to be considered for potential impairment                 30.00%   41.00%
Cash flow projection period used as an input in calculating fair value of goodwill         5 years            
Terminal year growth rates used as an input in calculating fair value of goodwill (as a percent)         2.00%            
Discount rates based on a weighted average cost of capital used as an input in calculating fair value of goodwill (as a percent)           14.00% 15.50%