XML 18 R10.htm IDEA: XBRL DOCUMENT
v3.19.3

Marketable Securities | 9 Months Ended
--- | ---
Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract] |
Marketable Securities | Marketable Securities The following tables summarize the Company's marketable debt and equity securities (in thousands):
| September 30, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value |  |  |  |  |  |  |  |  |  |
Government-sponsored enterprises | $ | 11,690 |  |  | $ | 5 |  |  | $ | — |  |  | $ | 11,695 |  |  |  |  |  |  |  |  |  |  |
Corporate debt securities | 74,563 |  |  | 20 |  |  | (2) |  |  | 74,581 |  |  |  |  |  |  |  |  |  |  |
Total marketable debt securities | 86,253 |  |  | 25 |  |  | (2) |  |  | 86,276 |  |  |  |  |  |  |  |  |  |  |
Corporate equity securities | 19,102 |  |  | — |  |  | (7,555) |  |  | 11,547 |  |  |  |  |  |  |  |  |  |  |
Total marketable securities | $ | 105,355 |  |  | $ | 25 |  |  | $ | (7,557) |  |  | $ | 97,823 |  |  |  |  |  |  |  |  |  |  |
| December 31, 2018 |  |  |  |  |  |
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Corporate debt securities | $ | 12,738 |  |  | $ | — |  |  | $ | (3) |  |  | $ | 12,735 |
All available-for-sale marketable debt securities held as of September 30, 2019 and December 31, 2018 had contractual maturities of less than one year. All of the Company's available-for-sale marketable debt securities in an unrealized loss position as of September 30, 2019 and December 31, 2018 were in a loss position for less than 12 months. There were no unrealized losses on marketable debt securities at September 30, 2019 or December 31, 2018 that the Company determined to be other-than-temporary. The Company recognizes changes in market value of equity securities as gains or losses in other income (expense) in the consolidated statement of operations and comprehensive loss. The unrealized loss on corporate equity securities of $7.6 million was recognized as a loss in other income (expense) in the consolidated statement of operations and comprehensive loss during the three months ended September 30, 2019.

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration