Accrued Liabilities (Tables)

12 Months Ended

Apr. 30, 2015

Payables and Accruals [Abstract]

Accrued liabilities

	2015		2014
Payroll, including vacation	$	27,000	$	226,000
Commissions		10,000		75,000
Bonuses		—		70,000
Lease legal settlement		—		225,000
Deferred gain on equipment sale		72,000		72,000
Accounting and audit		53,000		85,000
Other		120,000		176,000
	$	282,000	$	929,000