10. SEGMENT REPORTING (Tables)

6 Months Ended

Oct. 31, 2013

Segment Reporting [Abstract]

Segment information

	Three Months Ended October 31,						Six Months Ended October 31,
	2013			2012			2013			2012
Contract manufacturing services revenue	$	7,354,000		$	6,061,000		$	11,935,000		$	10,196,000
Cost of contract manufacturing services		4,195,000			3,703,000			6,865,000			5,727,000
Gross profit		3,159,000			2,358,000			5,070,000			4,469,000
Revenue from products in research and development		–			78,000			107,000			194,000
Research and development expense		(6,957,000	)		(6,053,000	)		(12,261,000	)		(13,034,000	)
Selling, general and administrative expense		(4,016,000	)		(3,440,000	)		(8,350,000	)		(6,357,000	)
Other income (expense), net		24,000			–			44,000			7,000
Loss on early extinguishment of debt		–			(1,696,000	)		–			(1,696,000	)
Net loss	$	(7,790,000	)	$	(8,753,000	)	$	(15,390,000	)	$	(16,417,000	)

Customer Revenue

	Three Months Ended October 31,						Six Months Ended October 31,
	2013			2012			2013			2012
United States (customer A)		85	%		97	%		88	%		90	%
United States (customer B)		13	%		–			8	%		–
Other customers		2	%		3	%		4	%		10	%
Total		100	%		100	%		100	%		100	%