6. STOCKHOLDERS' EQUITY (Tables)

6 Months Ended

Oct. 31, 2016

Equity [Abstract]

Schedule of dividends

Declaration Date	Dividend Per Share	Annualized Percentage Rate	Liquidation Preference	Accrual Period	Record Date	Payment Date
6/2/2016	$0.65625	10.50%	$25.00	4/1/2016 – 6/30/2016	6/17/2016	7/1/2016
9/6/2016	$0.65625	10.50%	$25.00	7/1/2016 – 9/30/2016	9/16/2016	10/3/2016