XML 49 R30.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Marketable Securities (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract] |
Schedule of Available-for-Sale Securities Reconciliation | The Company’s marketable securities within cash equivalents and investments included in the consolidated balance sheets are detailed as follows (in thousands):
|  | December 31, 2018 |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gain |  |  | Loss |  |  | Value |
U.S. Treasury securities |  | $ | 164,619 |  |  | $ | 16 |  |  | $ | (320 | ) |  | $ | 164,315 |
Foreign government securities |  |  | 3,486 |  |  |  | 1 |  |  |  | (24 | ) |  |  | 3,463 |
Corporate debt securities |  |  | 725,778 |  |  |  | 41 |  |  |  | (2,760 | ) |  |  | 723,059 |
Time deposits |  |  | 108,638 |  |  |  | — |  |  |  | — |  |  |  | 108,638 |
Total |  | $ | 1,002,521 |  |  | $ | 58 |  |  | $ | (3,104 | ) |  | $ | 999,475 |
Amounts included in: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  | $ | 60,532 |  |  | $ | — |  |  | $ | (1 | ) |  | $ | 60,531 |
Investments |  |  | 941,989 |  |  |  | 58 |  |  |  | (3,103 | ) |  |  | 938,944 |
Total |  | $ | 1,002,521 |  |  | $ | 58 |  |  | $ | (3,104 | ) |  | $ | 999,475 |
|  | December 31, 2017 |
|  | Amortized Cost |  |  | Unrealized Gain |  |  | Unrealized Loss |  |  | Fair Value |
U.S. Treasury securities |  | $ | 593,599 |  |  | $ | 82 |  |  | $ | (1,693 | ) |  | $ | 591,988 |
Foreign government securities |  |  | 6,982 |  |  |  | — |  |  |  | (30 | ) |  |  | 6,952 |
Corporate debt securities |  |  | 1,977,329 |  |  |  | 897 |  |  |  | (3,066 | ) |  |  | 1,975,160 |
Time deposits |  |  | 371,515 |  |  |  | — |  |  |  | (4 | ) |  |  | 371,511 |
Equity securities |  |  | 77 |  |  |  | 70 |  |  |  | — |  |  |  | 147 |
Total |  | $ | 2,949,502 |  |  | $ | 1,049 |  |  | $ | (4,793 | ) |  | $ | 2,945,758 |
Amounts included in: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents |  | $ | 194,377 |  |  | $ | — |  |  | $ | (1 | ) |  | $ | 194,376 |
Investments |  |  | 2,755,125 |  |  |  | 1,049 |  |  |  | (4,792 | ) |  |  | 2,751,382 |
Total |  | $ | 2,949,502 |  |  | $ | 1,049 |  |  | $ | (4,793 | ) |  | $ | 2,945,758 |
Investments Classified By Contractual Maturity Date | The estimated fair value of marketable debt securities by maturity date is as follows (in thousands):
|  | December 31, |
|  | 2018 |  |  | 2017 |
Due in one year or less |  | $ | 797,649 |  |  | $ | 2,042,673 |
Due after one year through three years |  |  | 201,826 |  |  |  | 902,938 |
Total |  | $ | 999,475 |  |  | $ | 2,945,611 |

X
- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
Name: | us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration