2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Apr. 30, 2013

Accounting Policies [Abstract]

Trade and Other Receivables

	2013		2012
Trade receivables(1)	$	1,642,000	$	2,264,000
Other receivables, net		20,000		89,000
Trade and other receivables, net	$	1,662,000	$	2,353,000

Inventories

	2013		2012
Raw materials	$	2,169,000	$	1,966,000
Work-in-process		2,170,000		1,645,000
Total inventories	$	4,339,000	$	3,611,000

Antidilutive Shares

	2013		2012		2011
Stock options and awards		3,505,777		96,591		85,361
Employee stock purchase plan		307,501		110,469		20,327
Warrants		–		–		68,991
Total		3,813,278		207,060		174,679