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Notes Payable, Related Party - Additional Information (Detail) (USD $)
9 Months Ended 3 Months Ended 9 Months Ended 61 Months Ended
Apr. 30, 2014
Apr. 30, 2013
Jul. 31, 2013
Apr. 30, 2014
Former Shareholders [Member]
Apr. 30, 2014
Former Shareholders [Member]
Apr. 30, 2014
Former Shareholders [Member]
Apr. 01, 2009
Former Shareholders [Member]
Jun. 09, 2010
Chairman [Member]
Short-term Debt [Line Items]                
Notes payable to Cortelco former shareholders $ 2,955,000   $ 3,004,000       $ 11,000,000  
Fair value of notes       2,955,000 2,955,000 2,955,000    
Discount Rate         15.22%      
Notes Payable Imputed Interest Benefit       110,000 454,000      
Repayments of notes payable 531,000 201,000       3,131,000    
Current maturities of notes payable - related parties $ 338,000   $ 330,000         $ 186,000