Accrued Liabilities (Tables)

12 Months Ended

Apr. 30, 2014

Payables and Accruals [Abstract]

Accrued liabilities

	2014		2013
Payroll, including vacation	$	226,000	$	253,000
Commissions		75,000		60,000
Bonuses		70,000		50,000
Lease abandonment		—		100,000
Lease legal settlement		225,000		—
Deferred gain on equipment sale		72,000		—
Other		261,000		221,000
	$	929,000	$	684,000