NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(5) Marketable Investments
Excess cash balances are invested primarily in short-term, exchange-traded debt instruments. Investments generally consist of non-equity type investments stated at market value.
The following is a summary of investment securities:
| Amortized Cost |
Gross Unrealized Gains |
Gross Unrealized Losses |
Estimated Fair Value |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (Amounts in thousands) | |||||||||||||||
| April 29, 2007 Available-for-Sale Securities: U.S. corporate equity securities |
$ | 301 | $ | 247 | $ | — | $ | 548 | |||||||
| U.S. corporate debt securities | 10,952 | — | — | 10,952 | |||||||||||
| Foreign corporate debt securities | 12,592 | 71 | (2 | ) | 12,661 | ||||||||||
| $ | 23,845 | $ | 318 | $ | (2 | ) | $ | 24,161 | |||||||
| April 30, 2006 Available-for-Sale Securities: U.S. corporate equity securities |
$ | 301 | $ | 20 | $ | — | $ | 321 | |||||||
| U.S. corporate debt securities | 3,080 | 5 | — | 3,085 | |||||||||||
| Foreign corporate debt securities | 19,329 | 36 | (3 | ) | 19,362 | ||||||||||
| $ | 22,710 | $ | 61 | $ | (3 | ) | $ | 22,768 | |||||||
By contractual maturity, all marketable investments at April 29, 2007 are due in one year or less.