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Marketable Securities (Tables) | 3 Months Ended
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Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract] |
Investments Classified as Available-For-Sale | Marketable securities classified as available-for-sale as of March 31, 2019 and December 31, 2018 were comprised of (in thousands):
|  | March 31, 2019 |  |  | December 31, 2018 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |  |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
Asset-backed securities |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 4,999 |  |  | $ | — |  |  | $ | (2 | ) |  | $ | 4,997 |
Corporate debt securities |  |  | 2,484 |  |  |  | — |  |  |  | — |  |  |  | 2,484 |  |  |  | 16,986 |  |  |  | — |  |  |  | (3 | ) |  |  | 16,983 |
Total |  | $ | 2,484 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,484 |  |  | $ | 21,985 |  |  | $ | — |  |  | $ | (5 | ) |  | $ | 21,980 |

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- Definition Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities. + References No definition available. + Details
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- References No definition available. + Details
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