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BASIS OF PRESENTATION OF UNAUDITED INTERIM CONDENSED CONSOLIDATED FINANCIAL STATEMENTS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: (Details 3) (USD $)
3 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Property and equipment:  
Depreciation expense$ 31,638,000$ 23,612,000
POS Information System
  
Property and equipment:  
Depreciation expense9,400,000 
Net book value of capitalized software costs9,400,000 
Accelerated depreciation8,700,000 
Accelerated depreciation, net of tax$ 5,500,000 
Accelerated depreciation, per diluted share (in dollars per share)$ 0.10