Fair Value Measurements (Details 1) - USD ($) $ in Thousands |
Jun. 30, 2015 |
Dec. 31, 2014 |
---|---|---|
Fair Value, Level 1 | ||
Fair Value | ||
Cash and Cash Equivalents | $ 9,744 | $ 137,266 |
Short-term Investments | 272,186 | 201,521 |
Total Cash and Cash Equivalents and Investments | 281,930 | 338,787 |
Other Long-term Liabilities | 0 | 0 |
Total Liabilities | 0 | 0 |
Fair Value, Level 2 | ||
Fair Value | ||
Cash and Cash Equivalents | 0 | 0 |
Short-term Investments | 553 | 552 |
Total Cash and Cash Equivalents and Investments | 553 | 552 |
Other Long-term Liabilities | 0 | 0 |
Total Liabilities | 0 | 0 |
Fair Value, Level 3 | ||
Fair Value | ||
Cash and Cash Equivalents | 0 | 0 |
Short-term Investments | 0 | 0 |
Total Cash and Cash Equivalents and Investments | 0 | 0 |
Other Long-term Liabilities | 18,629 | 17,638 |
Total Liabilities | 18,629 | 17,638 |
Fair Value, Total | ||
Fair Value | ||
Cash and Cash Equivalents | 9,744 | 137,266 |
Short-term Investments | 272,739 | 202,073 |
Total Cash and Cash Equivalents and Investments | 282,483 | 339,339 |
Other Long-term Liabilities | 18,629 | 17,638 |
Total Liabilities | $ 18,629 | $ 17,638 |