| Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis |
The following tables present the Company's financial instruments that are measured at fair value on a recurring basis: | | | | | | | | | | | | | | | | | | December 31, 2016 | | Quoted Market Prices in Active Markets for Identical Assets (Level 1) | | Significant Other Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | | Total Fair Value Measurements | | (In thousands) | Assets: | | | | | | | | Cash equivalents: | | | | | | | | Money market funds | $ | 667,662 |
| | $ | — |
| | $ | — |
| | $ | 667,662 |
| Time deposits | — |
| | 79,000 |
| | — |
| | 79,000 |
| Treasury discount notes | 24,991 |
| | — |
| | — |
| | 24,991 |
| Commercial paper | — |
| | 123,640 |
| | — |
| | 123,640 |
| Marketable securities: | | | | | | | | Commercial paper | — |
| | 49,797 |
| | — |
| | 49,797 |
| Treasury discount notes | 34,974 |
| | — |
| | — |
| | 34,974 |
| Corporate debt securities | — |
| | 4,571 |
| | — |
| | 4,571 |
| Total | $ | 727,627 |
| | $ | 257,008 |
| | $ | — |
| | $ | 984,635 |
| | | | | | | | | Liabilities: | | | | | | | | Contingent consideration arrangements | $ | — |
| | $ | — |
| | $ | (33,871 | ) | | $ | (33,871 | ) |
| | | | | | | | | | | | | | | | | | December 31, 2015 | | Quoted Market Prices in Active Markets for Identical Assets (Level 1) | | Significant Other Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | | Total Fair Value Measurements | | (In thousands) | Assets: | | | | | | | | Cash equivalents: | | | | | | | | Money market funds | $ | 601,848 |
| | $ | — |
| | $ | — |
| | $ | 601,848 |
| Time deposits | — |
| | 125,038 |
| | — |
| | 125,038 |
| Commercial paper | — |
| | 302,418 |
| | — |
| | 302,418 |
| Marketable securities: | | | | | | | | Corporate debt securities | — |
| | 27,578 |
| | — |
| | 27,578 |
| Equity security | 11,622 |
| | — |
| | — |
| | 11,622 |
| Long-term investments: | | | | | | | | Auction rate security | — |
| | — |
| | 4,050 |
| | 4,050 |
| Marketable equity security | 7,542 |
| | — |
| | — |
| | 7,542 |
| Total | $ | 621,012 |
| | $ | 455,034 |
| | $ | 4,050 |
| | $ | 1,080,096 |
| | | | | | | | | Liabilities: | | | | | | | | Contingent consideration arrangements | $ | — |
| | $ | — |
| | $ | (33,873 | ) | | $ | (33,873 | ) |
|
| Schedule of Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis |
The following table presents the changes in the Company's financial instruments that are measured at fair value on a recurring basis using significant unobservable inputs (Level 3): | | | | | | | | | | | | | | | | | | For the Year Ended | | December 31, 2016 | | December 31, 2015 | | Auction Rate Security | | Contingent Consideration Arrangements | | Auction Rate Security | | Contingent Consideration Arrangements | | (In thousands) | Balance at January 1 | $ | 4,050 |
| | $ | (33,873 | ) | | $ | 6,070 |
| | $ | (30,140 | ) | Total net gains (losses): | | | | | | | | Included in earnings: | | | | | | | | Fair value adjustments | — |
| | (2,555 | ) | | — |
| | 15,461 |
| Foreign currency exchange gains | — |
| | — |
| | — |
| | 626 |
| Included in other comprehensive income (loss) | 5,950 |
| | (1,571 | ) | | (2,020 | ) | | 1,872 |
| Fair value at date of acquisition | — |
| | (185 | ) | | — |
| | (27,442 | ) | Settlements | — |
| | 2,180 |
| | — |
| | 5,750 |
| Proceeds from sale | (10,000 | ) | | — |
| | — |
| | — |
| Other | — |
| | 2,133 |
| | — |
| | — |
| Balance at December 31 | $ | — |
| | $ | (33,871 | ) | | $ | 4,050 |
| | $ | (33,873 | ) |
|
| Carrying Value and Fair Value of Financial Instruments |
The following table presents the carrying value and the fair value of financial instruments measured at fair value only for disclosure purposes: | | | | | | | | | | | | | | | | | | December 31, 2016 | | December 31, 2015 | | Carrying Value | | Fair Value | | Carrying Value | | Fair Value | | (In thousands) | Current portion of long-term debt | $ | (20,000 | ) | | $ | (20,311 | ) | | $ | (40,000 | ) | | $ | (39,850 | ) | Long-term debt, net of current portion | (1,582,484 | ) | | (1,657,861 | ) | | (1,726,954 | ) | | (1,761,601 | ) |
|