| 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, 2014 | | 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 | $ | 174,720 |
| | $ | — |
| | $ | — |
| | $ | 174,720 |
| Commercial paper | — |
| | 388,801 |
| | — |
| | 388,801 |
| Time deposits | — |
| | 42,914 |
| | — |
| | 42,914 |
| Marketable securities: | | | | | | | | Corporate debt securities | — |
| | 159,197 |
| | — |
| | 159,197 |
| Equity security | 1,451 |
| | — |
| | — |
| | 1,451 |
| Long-term investments: | | | | | | | | Auction rate security | — |
| | — |
| | 6,070 |
| | 6,070 |
| Marketable equity security | 7,410 |
| | — |
| | — |
| | 7,410 |
| Total | $ | 183,581 |
| | $ | 590,912 |
| | $ | 6,070 |
| | $ | 780,563 |
| | | | | | | | | Liabilities: | | | | | | | | Contingent consideration arrangements | $ | — |
| | $ | — |
| | $ | (30,140 | ) | | $ | (30,140 | ) |
| | | | | | | | | | | | | | | | | | December 31, 2013 | | 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 | $ | 698,307 |
| | $ | — |
| | $ | — |
| | $ | 698,307 |
| Commercial paper | — |
| | 12,000 |
| | — |
| | 12,000 |
| Time deposits | — |
| | 32,325 |
| | — |
| | 32,325 |
| Marketable securities: | | | | | | | | Corporate debt security | — |
| | 1,008 |
| | — |
| | 1,008 |
| Equity securities | 4,996 |
| | — |
| | — |
| | 4,996 |
| Long-term investments: | | | | | | | | Auction rate security | — |
| | — |
| | 8,920 |
| | 8,920 |
| Marketable equity securities | 11,711 |
| | — |
| | — |
| | 11,711 |
| Total | $ | 715,014 |
| | $ | 45,333 |
| | $ | 8,920 |
| | $ | 769,267 |
| | | | | | | | | Liabilities: | | | | | | | | Contingent consideration arrangements | $ | — |
| | $ | — |
| | $ | (45,828 | ) | | $ | (45,828 | ) |
|
| Schedule of changes in assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) |
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, 2014 | | December 31, 2013 | | Auction Rate Security | | Contingent Consideration Arrangements | | Auction Rate Security | | Contingent Consideration Arrangements | | (In thousands) | Balance at January 1 | $ | 8,920 |
| | $ | (45,828 | ) | | $ | 8,100 |
| | $ | (1,909 | ) | Total net gains (losses): | | | | | | | | Included in earnings | — |
| | 13,367 |
| | — |
| | (343 | ) | Included in other comprehensive (loss) income | (2,850 | ) | | 3,025 |
| | 820 |
| | (2,445 | ) | Fair value at date of acquisition | — |
| | (8,813 | ) | | — |
| | (41,387 | ) | Settlements | — |
| | 8,109 |
| | — |
| | 256 |
| Balance at December 31 | $ | 6,070 |
| | $ | (30,140 | ) | | $ | 8,920 |
| | $ | (45,828 | ) |
|
| Fair Value, by Balance Sheet Grouping |
The following table presents the carrying value and the fair value of financial instruments measured at fair value only for disclosure purposes: | | | | | | | | | | | | | | | | | | December 31, 2014 | | December 31, 2013 | | Carrying
Value | | Fair
Value | | Carrying
Value | | Fair
Value | | (In thousands) | Long-term debt | $ | (1,080,000 | ) | | $ | (1,099,813 | ) | | $ | (1,080,000 | ) | | $ | (1,058,396 | ) |
|