STOCK OPTIONS AND INCENTIVE PLANS (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock exercise price (in dollars per share)	$ 0.49	$ 0.49	$ 0.49
Number of options than can be exercised (in shares)	0	0	0
Value of the option shares to be expensed	$ 684
Share-based compensation expense	110	384	167
Options exercisable at April 30 (in shares)	0	0	0
Weighted average fair value per share options granted per year (in dollars per share)	$ 0.49	$ 0.49	$ 0.49
Option, Exercise price range [Abstract]
Range of Exercise Prices (in dollars per share)	$ 0.49
Number Outstanding and Exercisable (in shares)	0
Weighted Average Remaining Contract Life	2 years 1 month 6 days
Weighted Average Exercise and Outstanding Price (in dollars per share)	$ 0.49
Options [Roll Forward]
Outstanding Beginning (in shares)	7,262,064	7,262,064	1,224,834
Granted (in shares)	0	0	7,262,064
Expired (in shares)	0	0	1,224,834
Exercised (in shares)	0	0	0
Outstanding Ending (in shares)	7,262,064	7,262,064	7,262,064
Average Price [Roll Forward]
Outstanding Beginning (in dollars per share)	$ 0.49	$ 0.49	$ 0.80
Granted (in dollars per share)	$ 0	$ 0	$ 0.49
Expired (in dollars per share)	$ 0	$ 0	$ 0.79
Exercised (in dollars per share)	$ 0	$ 0	$ 0
Outstanding Ending (in dollars per share)	$ 0.49	$ 0.49	$ 0.49
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued (in shares)	7,262,064
Expiration date	Dec. 15, 2015
Target price of share (in dollars per share)	$ 0.49
Share-based compensation expense	$ 110
Strike Price (in dollars per share)	$ 1.36
Stock Price (in dollars per share)	$ 0.49
Volatility (in hundredths)	125.00%
Term of award	3 years 1 month 6 days
Dividend yield (in hundredths)	0.00%
Interest Rate (in hundredths)	1.01%
Incentive Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock exercise price (in dollars per share)	$ 0.49
Average Price [Roll Forward]
Outstanding Ending (in dollars per share)	$ 0.49
Incentive Stock Option [Member] | Year 1 Target [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options than can be exercised (in shares)	2,420,688
Target price of share (in dollars per share)	$ 0.92
Stock Price (in dollars per share)	$ 0.92
Options exercisable at April 30 (in shares)	2,420,688
Incentive Stock Option [Member] | Year 2 Target [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options than can be exercised (in shares)	2,420,688
Target price of share (in dollars per share)	$ 1.41
Stock Price (in dollars per share)	$ 1.41
Options exercisable at April 30 (in shares)	2,420,688
Incentive Stock Option [Member] | Year 3 Target [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options than can be exercised (in shares)	2,420,688
Target price of share (in dollars per share)	$ 1.9
Stock Price (in dollars per share)	$ 1.9
Options exercisable at April 30 (in shares)	2,420,688