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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2013
Fair Value Disclosures [Abstract] |
Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis | Assets and liabilities of the Company are measured at fair value on a recurring basis as of March 31, 2013 and are summarized as follows:
|  |  |  |  | Fair Value Measurements at Reporting Date Using |
Description |  | Total March 31, 2013 |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 85,863 |  |  | $ | 85,863 |  |  | $ | — |  |  | $ | — |
Bankers’ acceptance drafts |  |  | 136 |  |  |  | — |  |  |  | 136 |  |  |  | — |
Trading securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual funds |  |  | 813 |  |  |  | 813 |  |  |  | — |  |  |  | — |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bankers’ acceptance drafts |  |  | 93 |  |  |  | — |  |  |  | 93 |  |  |  | — |
U.S. treasury obligations |  |  | 13,042 |  |  |  | — |  |  |  | 13,042 |  |  |  | — |
U.S. agency obligations |  |  | 327,790 |  |  |  | 302,684 |  |  |  | 25,106 |  |  |  | — |
Derivatives – currency forward contracts |  |  | 1,566 |  |  |  | — |  |  |  | 1,566 |  |  |  | — |
Total assets |  | $ | 429,303 |  |  | $ | 389,360 |  |  | $ | 39,943 |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives – currency forward contracts |  | $ | 300 |  |  | $ | — |  |  | $ | 300 |  |  | $ | — |
Reported as follows: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents(1) |  | $ | 85,999 |  |  | $ | 85,863 |  |  | $ | 136 |  |  | $ | — |
Short-term investments |  |  | 331,634 |  |  |  | 293,393 |  |  |  | 38,241 |  |  |  | — |
Other current assets |  |  | 1,566 |  |  |  | — |  |  |  | 1,566 |  |  |  | — |
Total current assets |  | $ | 419,199 |  |  | $ | 379,256 |  |  | $ | 39,943 |  |  | $ | — |
Long-term investments(2) |  | $ | 10,104 |  |  | $ | 10,104 |  |  | $ | — |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current liabilities |  | $ | 300 |  |  | $ | — |  |  | $ | 300 |  |  | $ | — |
(1) | The cash and cash equivalent amounts presented in the table above do not include cash of $169,929 and non-negotiable time deposits of $10,780 as of March 31, 2013.
(2) | The long-term investments presented in the table above do not include non-negotiable time deposits of $53 as of March 31, 2013.
Assets and liabilities of the Company are measured at fair value on a recurring basis as of December 31, 2012 and are summarized as follows:
|  |  |  |  | Fair Value Measurements at Reporting Date Using |
Description |  | Total December 31, 2012 |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash equivalents: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 51,291 |  |  | $ | 51,291 |  |  | $ | — |  |  | $ | — |
Bankers acceptance drafts |  |  | 16 |  |  |  | — |  |  |  | 16 |  |  |  | — |
Trading securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mutual funds |  |  | 791 |  |  |  | 791 |  |  |  | — |  |  |  | — |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bankers’ acceptance drafts |  |  | 242 |  |  |  | — |  |  |  | 242 |  |  |  | — |
U.S. treasury obligations |  |  | 13,054 |  |  |  | — |  |  |  | 13,054 |  |  |  | — |
U.S. agency obligations |  |  | 325,672 |  |  |  | 295,665 |  |  |  | 30,007 |  |  |  | — |
Derivatives – currency forward contracts |  |  | 961 |  |  |  | — |  |  |  | 961 |  |  |  | — |
Total assets |  | $ | 392,027 |  |  | $ | 347,747 |  |  | $ | 44,280 |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives – currency forward contracts |  | $ | 1,310 |  |  | $ | — |  |  | $ | 1,310 |  |  | $ | — |
Reported as follows: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents(1) |  | $ | 51,307 |  |  | $ | 51,291 |  |  | $ | 16 |  |  | $ | — |
Short-term investments(2) |  |  | 327,601 |  |  |  | 284,298 |  |  |  | 43,303 |  |  |  | — |
Other current assets |  |  | 961 |  |  |  | — |  |  |  | 961 |  |  |  | — |
Total current assets |  | $ | 379,869 |  |  | $ | 335,589 |  |  | $ | 44,280 |  |  | $ | — |
Long-term investments |  | $ | 12,158 |  |  | $ | 12,158 |  |  | $ | — |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other current liabilities |  | $ | 1,310 |  |  | $ | — |  |  | $ | 1,310 |  |  | $ | — |
(1) | The cash and cash equivalent amounts presented in the table above do not include cash of $185,143 and non-negotiable time deposits of $51,138 as of December 31, 2012.
(2) | The short-term investments presented in the table above do not include non-negotiable time deposits of $52 as of December 31, 2012.

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19190-110258 + Details
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