Summary of Significant Accounting Policies - Fair Value of Financial Instruments (Details) (USD $)	12 Months Ended
	Apr. 30, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill	$ 1,083,000
Total Increase (Reduction) in Fair Value	(438,000)
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 1 | Goodwill
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 2 | Goodwill
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 3 | Goodwill
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill	$ 1,083,000