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v3.3.1.900

Marketable Securities (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014
Cash equivalents and marketable securities |  |
Fair Value | $ 252,737 | $ 270,921
Amortized Cost | 252,925 | 271,034
Cash Cash Equivalents And Short Term Investments Unrealized Gains | 0 | 1
CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses | (188) | (114)
Gross Unrealized Gains | 0 | 1
Gross Unrealized Losses | 188 | 114
Cash, fair value | 34,969 | 29,188
Cash | 34,969 | 29,188
Cash, cash equivalents and marketable securities |  |
Fair Value | 287,706 | 300,109
Amortized Cost | 287,894 | 300,222
Money market funds |  |
Cash equivalents and marketable securities |  |
Fair Value | 77,804 | 124,938
Amortized Cost | 77,804 | 124,938
Cash Cash Equivalents And Short Term Investments Unrealized Gains | 0 | 0
CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses | $ 0 | $ 0
Weighted Rate of Return (as a percent) | 0.12% | 0.01%
US Treasury and Government [Member] |  |
Cash equivalents and marketable securities |  |
Fair Value | $ 14,110 |
Amortized Cost | 14,142 |
Cash Cash Equivalents And Short Term Investments Unrealized Gains | 0 |
CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses | $ (32) |
Weighted Rate of Return (as a percent) | 0.48% |
Corporate notes, bonds and commercial paper |  |
Cash equivalents and marketable securities |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 159,673 | $ 139,989
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | $ 188 | $ 114
Maximum maturity period of available-for-sale securities (in years) | 3 years | 3 years
Maximum remaining maturity period of available-for-sale securities (in years) | 1 year |
Fair Value | $ 160,823 | $ 145,983
Amortized Cost | 160,979 | 146,096
Cash Cash Equivalents And Short Term Investments Unrealized Gains | 0 | 1
CashCashEquivalentsAndShortTermInvestmentsUnrealizedLosses | $ (156) | $ (114)
Weighted Rate of Return (as a percent) | 0.45% | 0.25%
Short term marketable securities |  |
Cash equivalents and marketable securities |  |
Fair Value | $ 143,942 | $ 145,983
Cash Equivalents [Member] |  |
Cash equivalents and marketable securities |  |
Maximum remaining maturity period of available-for-sale securities (in years) | 1 year | 1 year
Fair Value | $ 108,795 | $ 124,938

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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. + References No definition available. + Details
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