XML 44 R32.htm IDEA: XBRL DOCUMENT v3.5.0.2
Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
12 Months Ended
Apr. 30, 2016
Apr. 30, 2015
Mar. 11, 2015
Nov. 30, 2014
Apr. 30, 2014
Property, Plant and Equipment [Line Items]          
Estimated fair value of warrants     $ 1,600,000    
Allowance for doubtful accounts receivable $ 32,000 $ 2,000      
Unbilled receivables, current 617,000 636,000      
Restricted cash 150,000 163,000      
Depreciation and amortization 156,000 214,000      
Capital lease asset 124,000 124,000      
Capital leases, income statement, amortization expense $ 24,818 12,405      
Capital leases, future minimum payments, executory costs       $ 149,000  
Capital leases monthly payments       $ 3,000  
Capital leases of lessee, contingent rentals, basis spread on variable rate 5.00%        
Deferred revenue $ 67,000 258,000      
Unrecognized tax benefits $ 165,000 $ 100,000     $ 0
Minimum [Member]          
Property, Plant and Equipment [Line Items]          
Useful life 3 years        
Maximum [Member]          
Property, Plant and Equipment [Line Items]          
Useful life 7 years