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Accrued Expenses (Details) - USD ($)
$ in Thousands
Jul. 31, 2015
Jul. 31, 2014
Accrued Expenses [Abstract]    
Carrier minutes termination $ 47,317 $ 53,280
Carrier network connectivity, toll-free and 800 services 7,071 7,896
Regulatory fees and taxes 50,797 43,293
Legal settlements 2,059 1,615
Compensation costs 14,138 15,612
Legal and professional fees 4,938 4,708
Other 12,952 16,124
TOTAL $ 139,272 $ 142,528