11. SEGMENT REPORTING (Tables)

9 Months Ended

Jan. 31, 2013

Segment Reporting [Abstract]

Segment information

	Three Months Ended   January 31,						Nine Months Ended January 31,
	2013			2012			2013			2012
Contract manufacturing services revenue	$	6,961,000		$	3,203,000		$	17,157,000		$	12,796,000
Cost of contract manufacturing services		3,651,000			2,484,000			9,378,000			9,219,000
Gross profit		3,310,000			719,000			7,779,000			3,577,000
Revenue from products in research and development		78,000			78,000			272,000			372,000
Research and development expense		(5,437,000	)		(9,180,000	)		(18,471,000	)		(26,758,000	)
Selling, general and administrative expense		(3,112,000	)		(2,710,000	)		(9,469,000	)		(8,371,000	)
Other income (expense), net		247,000			3,000			254,000			(57,000	)
Loss on early extinguishment of debt		–			–			(1,696,000	)		–
Net loss	$	(4,914,000	)	$	(11,090,000	)	$	(21,331,000	)	$	(31,237,000	)

Customer Revenue

	Three Months Ended January 31,				Nine Months Ended January 31,
	2013		2012		2013		2012
United States (customer A)		60%		58%		78%		36%
United States (customer B)		37		–		20		–
United States (customer C)		–		31		–		8
Germany (one customer)		–		5		–		20
Denmark (one customer)		–		4		–		28
Other customers		3		2		2		8
Total		100%		100%		100%		100%