Cash and Cash Equivalents and Investments |
Cash, cash equivalents and investments consisted of the following (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | March 31, 2018 | | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Estimated Fair Value | | Cash and Cash Equivalents | | Investments | Cash | $ | 136,883 |
| | $ | — |
| | $ | — |
| | $ | 136,883 |
| | $ | 136,883 |
| | $ | — |
| Time deposits | 390,000 |
| | — |
| | — |
| | 390,000 |
| | 135,000 |
| | 255,000 |
| Money market funds | 181,286 |
| | — |
| | — |
| | 181,286 |
| | 181,286 |
| | — |
| Totals | $ | 708,169 |
| | $ | — |
| | $ | — |
| | $ | 708,169 |
| | $ | 453,169 |
| | $ | 255,000 |
|
| | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2017 | | Amortized Cost | | Gross Unrealized Gains | | Gross Unrealized Losses | | Estimated Fair Value | | Cash and Cash Equivalents | | Investments | Cash | $ | 225,235 |
| | $ | — |
| | $ | — |
| | $ | 225,235 |
| | $ | 225,235 |
| | $ | — |
| Time deposits | 235,000 |
| | — |
| | — |
| | 235,000 |
| | 20,000 |
| | 215,000 |
| Money market funds | 140,800 |
| | — |
| | — |
| | 140,800 |
| | 140,800 |
| | — |
| Totals | $ | 601,035 |
| | $ | — |
| | $ | — |
| | $ | 601,035 |
| | $ | 386,035 |
| | $ | 215,000 |
|
|