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Marketable Securities | 9 Months Ended
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Sep. 30, 2019
Investments Debt And Equity Securities [Abstract] |
Marketable Securities | 7. MARKETABLE SECURITIES At September 30, 2019 and December 31, 2018, the fair value of marketable securities, which were all classified as available for sale, included the following (in thousands):
|  | September 30, 2019 |
|  | Adjusted Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value |
Level 2: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate debt securities |  | $ | 34,905 |  |  | $ | 11 |  |  | $ | (4 | ) |  | $ | 34,912 |
Government-sponsored enterprise debt securities |  |  | 3,811 |  |  |  | 1 |  |  |  | — |  |  |  | 3,812 |
Total |  | $ | 38,716 |  |  | $ | 12 |  |  | $ | (4 | ) |  | $ | 38,724 |
|  | December 31, 2018 |
|  | Adjusted Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Fair Value |
Level 2: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate debt securities |  | $ | 31,521 |  |  | $ | — |  |  | $ | (23 | ) |  | $ | 31,498 |
Government-sponsored enterprise debt securities |  |  | 2,999 |  |  |  | — |  |  |  | — |  |  |  | 2,999 |
Total |  | $ | 34,520 |  |  | $ | — |  |  | $ | (23 | ) |  | $ | 34,497 |
The carrying amounts reported in the Condensed Consolidated Balance Sheets approximate the fair value based on quoted market prices or alternative pricing sources and models utilizing market observable inputs. As of September 30, 2019, the Company does not consider any of its marketable securities to be other than temporarily impaired. During the three and nine months ended September 30, 2019 and 2018, the Company did not reclassify any items out of accumulated other comprehensive (loss) income to net income. All investments in marketable securities are classified as current assets on the balance sheet because the underlying securities mature within one year from the balance sheet date.

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2176304 + Details
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