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Cash, Cash Equivalents and Investments (Tables)
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6 Months Ended |
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May 31, 2014
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| Investments and Cash [Abstract] |
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| Summary of Cash, Cash Equivalents and Trading and Available-for-sale Investments |
A summary of our cash, cash equivalents and available-for-sale investments at May 31, 2014 is as follows (in thousands): | | | | | | | | | | | | | | | | | | Amortized Cost Basis | | Unrealized Gains | | Unrealized Losses | | Fair Value | Cash | $ | 127,279 |
| | $ | — |
| | $ | — |
| | $ | 127,279 |
| Money market funds | 74,692 |
| | — |
| | — |
| | 74,692 |
| State and municipal bond obligations | 24,470 |
| | 135 |
| | — |
| | 24,605 |
| Auction rate securities – municipal bonds | 25,250 |
| | — |
| | (3,063 | ) | | 22,187 |
| Auction rate securities – student loans | 3,500 |
| | — |
| | (631 | ) | | 2,869 |
| Total | $ | 255,191 |
| | $ | 135 |
| | $ | (3,694 | ) | | $ | 251,632 |
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A summary of our cash, cash equivalents and available-for-sale investments at November 30, 2013 is as follows (in thousands): | | | | | | | | | | | | | | | | | | | | | | Amortized Cost Basis | | Realized Losses | | Unrealized Gains | | Unrealized Losses | | Fair Value | Cash | $ | 144,305 |
| | $ | — |
| | $ | — |
| | $ | — |
| | $ | 144,305 |
| Money market funds | 54,513 |
| | — |
| | — |
| | — |
| | 54,513 |
| State and municipal bond obligations | 30,938 |
| | — |
| | 164 |
| | — |
| | 31,102 |
| Auction rate securities – municipal bonds | 27,150 |
| | (380 | ) | | — |
| | (3,317 | ) | | 23,453 |
| Auction rate securities – student loans | 3,500 |
| | — |
| | — |
| | (672 | ) | | 2,828 |
| Total | $ | 260,406 |
| | $ | (380 | ) | | $ | 164 |
| | $ | (3,989 | ) | | $ | 256,201 |
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| Summary of Cash, Cash Equivalents and Trading and Available-for-sale Investments by Balance Sheet Classification |
Such amounts are classified on our condensed consolidated balance sheets as follows (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | May 31, 2014 | | November 30, 2013 | | Cash and Equivalents | | Short-Term Investments | | Long-Term Investments | | Cash and Equivalents | | Short-Term Investments | | Long-Term Investments | Cash | $ | 127,279 |
| | $ | — |
| | $ | — |
| | $ | 144,305 |
| | $ | — |
| | $ | — |
| Money market funds | 74,692 |
| | — |
| | — |
| | 54,513 |
| | — |
| | — |
| State and municipal bond obligations | — |
| | 24,605 |
| | — |
| | — |
| | 31,102 |
| | — |
| Auction rate securities – municipal bonds | — |
| | — |
| | 22,187 |
| | — |
| | 1,520 |
| | 21,933 |
| Auction rate securities – student loans | — |
| | — |
| | 2,869 |
| | — |
| | — |
| | 2,828 |
| Total | $ | 201,971 |
| | $ | 24,605 |
| | $ | 25,056 |
| | $ | 198,818 |
| | $ | 32,622 |
| | $ | 24,761 |
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| Fair Value of Debt Securities by Contractual Maturity |
The fair value of debt securities by contractual maturity is as follows (in thousands): | | | | | | | | | | May 31, 2014 | | November 30, 2013 | Due in one year or less (1) | $ | 39,943 |
| | $ | 42,198 |
| Due after one year (2) | 9,718 |
| | 15,185 |
| Total | $ | 49,661 |
| | $ | 57,383 |
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| | (1) | Includes ARS which are tendered for interest-rate setting purposes periodically throughout the year. Beginning in February 2008, auctions for these securities began to fail, and therefore these investments currently lack short-term liquidity. The remaining contractual maturities of these securities range from 10 to 29 years. |
| | (2) | Includes state and municipal bond obligations, which are securities representing investments available for current operations and are classified as current in the consolidated balance sheets. |
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| Investments with Continuous Unrealized Losses and Their Related Fair Values |
Investments with continuous unrealized losses and their related fair values are as follows at May 31, 2014 (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | Less Than 12 Months | | 12 Months or Greater | | Total | | Fair Value | | Unrealized Losses | | Fair Value | | Unrealized Losses | | Fair Value | | Unrealized Losses | Auction rate securities – municipal bonds | $ | — |
| | $ | — |
| | $ | 22,187 |
| | $ | (3,063 | ) | | $ | 22,187 |
| | $ | (3,063 | ) | Auction rate securities – student loans | — |
| | — |
| | 2,869 |
| | (631 | ) | | 2,869 |
| | (631 | ) | Total | $ | — |
| | $ | — |
| | $ | 25,056 |
| | $ | (3,694 | ) | | $ | 25,056 |
| | $ | (3,694 | ) |
Investments with continuous unrealized losses and their related fair values are as follows at November 30, 2013 (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | Less Than 12 Months | | 12 Months or Greater | | Total | | Fair Value | | Unrealized Losses | | Fair Value | | Unrealized Losses | | Fair Value | | Unrealized Losses | Auction rate securities – municipal bonds | $ | — |
| | $ | — |
| | $ | 21,933 |
| | $ | (3,317 | ) | | $ | 21,933 |
| | $ | (3,317 | ) | Auction rate securities – student loans | — |
| | — |
| | 2,828 |
| | (672 | ) | | 2,828 |
| | (672 | ) | Total | $ | — |
| | $ | — |
| | $ | 24,761 |
| | $ | (3,989 | ) | | $ | 24,761 |
| | $ | (3,989 | ) |
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