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Schedule of Total Operating Income for Continuing Reportable Segments (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Segment Reporting Information [Line Items]      
Total operating income for reportable segments $ 274,442 $ 228,002 $ 180,318
Interest income 5,397 5,497 4,629
Other (1,974) (223) (407)
Income before income taxes 277,865 233,276 184,540
Income tax provision 101,640 86,137 72,389
Net income $ 176,225 $ 147,139 $ 112,151