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MARKETABLE SECURITIES | 12 Months Ended
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Apr. 30, 2011
Notes To Financial Statements [Abstract] |
MARKETABLE SECURITIES | NOTE 6 . MARKETABLE SECURITIES The amortized cost and fair value of marketable securities available-for-sale at April 30, 2011 and 2010 are as follows.
| (in thousands) |
2011 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |
Bank certificates of deposit |  | $ | 625 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 625 |
|  | $ | 625 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 625 |
| (in thousands) |
2010 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |
Bank certificates of deposit |  | $ | 420 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 420 |
|  | $ | 420 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 420 |
As of April 30, 2011, $275,000 of the investment in bank certificates of deposit will mature in less than one year, $50,000 will mature in May 2012 and the remaining $300,000 will mature in March 2014. There were no realized gains or losses on sales of securities available-for-sale for the fiscal years ended April 30, 2011, 2010 and 2009. There were no other-than-temporary impairment losses incurred on the securities available-for-sale for the fiscal years ended April 30, 2011, 2010 and 2009.

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- Definition This item represents the entire disclosure related to Marketable Securities which may consist of all investments in certain debt and equity securities (and other assets). + References No definition available. + Details
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