XML 35 R24.htm IDEA: XBRL DOCUMENT
v3.19.2

Cash, Cash Equivalents and Short-Term Investments (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2019
Cash And Cash Equivalents [Abstract] |
Schedule of Cash and Cash Equivalents and Short-Term Investments by Significant Investment Category | The following tables show the Company’s cash and cash equivalents and short-term investments by significant investment category as of June 30, 2019 and December 31, 2018 (in thousands):
|  | June 30, 2019 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |  |  | Cash and Cash Equivalents |  |  | Short-Term Investments |
Cash |  | $ | 2,564 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,564 |  |  | $ | 2,564 |  |  | $ | — |
Level 1 (1): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  |  | 6,528 |  |  |  | — |  |  |  | — |  |  |  | 6,528 |  |  |  | 6,528 |  |  |  | — |
U.S. treasury securities |  |  | 4,990 |  |  |  | 6 |  |  |  | — |  |  |  | 4,996 |  |  |  | — |  |  |  | 4,996 |
Subtotal |  |  | 11,518 |  |  |  | 6 |  |  |  | — |  |  |  | 11,524 |  |  |  | 6,528 |  |  |  | 4,996 |
Level 2 (2): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper |  |  | 9,678 |  |  |  | — |  |  |  | — |  |  |  | 9,678 |  |  |  | 1,548 |  |  |  | 8,130 |
Corporate debt obligations |  |  | 3,038 |  |  |  | 4 |  |  |  | — |  |  |  | 3,042 |  |  |  | — |  |  |  | 3,042 |
Repurchase agreements |  |  | 3,001 |  |  |  | — |  |  |  | — |  |  |  | 3,001 |  |  |  | 3,001 |  |  |  | — |
Asset-backed securities |  |  | 4,401 |  |  |  | 3 |  |  |  | — |  |  |  | 4,404 |  |  |  | — |  |  |  | 4,404 |
Subtotal |  |  | 20,118 |  |  |  | 7 |  |  |  | — |  |  |  | 20,125 |  |  |  | 4,549 |  |  |  | 15,576 |
Total |  | $ | 34,200 |  |  | $ | 13 |  |  |  | — |  |  | $ | 34,213 |  |  | $ | 13,641 |  |  | $ | 20,572 |
|  | December 31, 2018 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |  |  | Cash and Cash Equivalents |  |  | Short-Term Investments |
Cash |  | $ | 3,044 |  |  | $ | — |  |  | $ | — |  |  | $ | 3,044 |  |  | $ | 3,044 |  |  | $ | — |
Level 1 (1): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds |  |  | 5,482 |  |  |  | — |  |  |  | — |  |  |  | 5,482 |  |  |  | 5,482 |  |  |  | — |
U.S. treasury securities |  |  | 1,988 |  |  |  | — |  |  |  | — |  |  |  | 1,988 |  |  |  | — |  |  |  | 1,988 |
Subtotal |  |  | 7,470 |  |  |  | — |  |  |  | — |  |  |  | 7,470 |  |  |  | 5,482 |  |  |  | 1,988 |
Level 2 (2): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper |  |  | 10,639 |  |  |  | — |  |  |  | — |  |  |  | 10,639 |  |  |  | 2,095 |  |  |  | 8,544 |
Corporate debt obligations |  |  | 5,964 |  |  |  | — |  |  |  | (7 | ) |  |  | 5,957 |  |  |  | — |  |  |  | 5,957 |
Repurchase agreements |  |  | 3,000 |  |  |  | — |  |  |  | — |  |  |  | 3,000 |  |  |  | 3,000 |  |  |  | — |
Asset-backed securities |  |  | 3,682 |  |  |  | — |  |  |  | (2 | ) |  |  | 3,680 |  |  |  | — |  |  |  | 3,680 |
Subtotal |  |  | 23,285 |  |  |  | — |  |  |  | (9 | ) |  |  | 23,276 |  |  |  | 5,095 |  |  |  | 18,181 |
Total |  | $ | 33,799 |  |  |  | — |  |  | $ | (9 | ) |  | $ | 33,790 |  |  | $ | 13,621 |  |  | $ | 20,169 |
| (1) | Level 1 fair value estimates are based on quoted prices in active markets for identical assets or liabilities.
| (2) | Level 2 fair value estimates are based on observable inputs other than quoted prices in active markets for identical assets and liabilities, quoted prices for identical or similar assets or liabilities in inactive markets, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
Schedule of Contractual Maturities of Short-term Investments | Contractual maturities of short-term investments as of June 30, 2019 are as follows (in thousands):

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

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
- 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