12. SUBSEQUENT EVENTS (Details Narrative) - USD ($)	2 Months Ended	12 Months Ended
	Jul. 14, 2016	Apr. 30, 2016
Proceeds from issuance of equity		$ 45,872,000
Amounts remaining under registration statements	$ 112,445,000
Stock Options
Options granted, exercise price		$ 1.26
Equity Distribution Agreement [Member]
Amounts remaining under registration statements		$ 13,031,000
August 2015 AMI Sales Agreement [Member[
Amounts remaining under registration statements		$ 22,553,000
Subsequent Event [Member]
Number of common stock shares issued, shares	4,526,236
Proceeds from issuance of equity	$ 2,169,000
Options granted	6,412,057
Subsequent Event [Member] | Series E Preferred Stock [Member]
Dividend paid	$ 1,035,000
Dividend declared date	Jun. 02, 2016
Dividend date of record	Jun. 17, 2016
Subsequent Event [Member] | Stock Options | 2011 Stock Incentive Plan [Member]
Options granted	6,412,057
Options granted, exercise price	$ .5001
Subsequent Event [Member] | Equity Distribution Agreement [Member]
Number of common stock shares issued, shares	2,649,318
Proceeds from issuance of equity	$ 1,232,000
Amounts remaining under registration statements	$ 11,799,000
Subsequent Event [Member] | August 2015 AMI Sales Agreement [Member[
Number of common stock shares issued, shares	1,876,918
Proceeds from issuance of equity	$ 937,000
Amounts remaining under registration statements	$ 21,616,000