Significant Customers - Narrative (Details) - USD ($)	12 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Customer One [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,000,000	$ 900,000
Accounts receivable, gross	$ 401,654	$ 153,446
Customer One [Member] | Revenue [Member]
Revenue, Major Customer [Line Items]
Concentration risk percentage	17.60%	12.80%
Customer One [Member] | Accounts Receivable [Member]
Revenue, Major Customer [Line Items]
Concentration risk percentage	30.70%	14.50%
Customer Two [Member]
Revenue, Major Customer [Line Items]
Revenues		$ 900,000
Accounts receivable, gross	$ 161,150	$ 119,540
Customer Two [Member] | Revenue [Member]
Revenue, Major Customer [Line Items]
Concentration risk percentage		12.60%
Customer Two [Member] | Accounts Receivable [Member]
Revenue, Major Customer [Line Items]
Concentration risk percentage	12.30%	11.30%
Customer Three [Member]
Revenue, Major Customer [Line Items]
Revenues		$ 800,000
Customer Three [Member] | Revenue [Member]
Revenue, Major Customer [Line Items]
Concentration risk percentage		11.70%