XML 32 R21.htm IDEA: XBRL DOCUMENT
v3.19.2

Cash Equivalents and Marketable Securities (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2019
Investments Debt And Equity Securities [Abstract] |
Schedule of Estimated Fair Value of Cash Equivalents and Marketable Securities | The following tables summarize the estimated fair value of the Company’s cash equivalents and marketable securities and the gross unrealized gains and losses (in thousands):
|  | June 30, 2019 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |
Cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 5,947 |  |  | $ | — |  |  | $ | — |  |  | $ | 5,947 |
Reverse repurchase agreements |  |  | 6,250 |  |  |  | — |  |  |  | — |  |  |  | 6,250 |
Commercial paper |  |  | 7,991 |  |  |  | — |  |  |  | (1 | ) |  |  | 7,990 |
Total cash equivalents |  |  | 20,188 |  |  |  | — |  |  |  | (1 | ) |  |  | 20,187 |
Marketable securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper |  |  | 41,407 |  |  |  | 39 |  |  |  | (1 | ) |  |  | 41,445 |
U.S. government securities |  |  | 38,636 |  |  |  | 43 |  |  |  | (13 | ) |  |  | 38,666 |
Total marketable securities |  | $ | 80,043 |  |  | $ | 82 |  |  | $ | (14 | ) |  | $ | 80,111 |
|  | December 31, 2018 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |
Cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  | $ | 7,180 |  |  | $ | — |  |  | $ | — |  |  | $ | 7,180 |
Reverse repurchase agreements |  |  | 6,250 |  |  |  | — |  |  |  | — |  |  |  | 6,250 |
Commercial paper |  |  | 5,977 |  |  |  | — |  |  |  | (1 | ) |  |  | 5,976 |
Total cash equivalents |  |  | 19,407 |  |  |  | — |  |  |  | (1 | ) |  |  | 19,406 |
Marketable securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper |  |  | 47,964 |  |  |  | — |  |  |  | (24 | ) |  |  | 47,940 |
U.S. government securities |  |  | 4,114 |  |  |  | — |  |  |  | (2 | ) |  |  | 4,112 |
Total marketable securities |  | $ | 52,078 |  |  | $ | — |  |  | $ | (26 | ) |  | $ | 52,052 |
Summary of Contractual Maturities of Marketable Securities at Estimated Fair Value | The following table summarizes the contractual maturities of the Company’s marketable securities at estimated fair value (in thousands):
|  | June 30, |  |  | December 31, |
|  | 2019 |  |  | 2018 |
Due in one year or less |  | $ | 67,330 |  |  | $ | 52,052 |
Due in 1 - 2 years |  |  | 12,781 |  |  |  | — |
Total marketable securities |  | $ | 80,111 |  |  | $ | 52,052 |

X
- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
Name: | us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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 Tabular disclosure of the components of cash, cash equivalents, and investments. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration