Accounting for the Costs of Computer Software Developed for Internal Use (Detail Textuals) (USD $)	3 Months Ended
	Jul. 31, 2014	Jul. 31, 2013
Internal Use Software [Abstract]
Capitalized cost of development of software for internal use	$ 528,000	$ 586,000
Development costs for digital production software project	527,000	574,000
Development costs related to new fulfillment system	1,000	12,000
Internal costs to develop software	305,000	445,000
Third party programmers' costs	223,000	141,000
Expected useful life of asset	5 years
Amortization expense	$ 533,000	$ 402,000