XML 29 R21.htm IDEA: XBRL DOCUMENT
v3.22.1

Available-for-Sale-Securities (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2022
Debt Securities, Available-for-sale [Abstract] |
Schedule of Available-for-sale Securities Reconciliation | The following table is a summary of available-for-sale securities recorded in cash and cash equivalents or marketable securities in our Consolidated Balance Sheets (in thousands):
| March 31, 2022 |  | December 31, 2021
| Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value |  | Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value
Corporate debt securities | $ | 62,770 |  |  | $ | — |  |  | $ | (162) |  |  | $ | 62,608 |  |  | $ | 53,135 |  |  | $ | — |  |  | $ | (65) |  |  | $ | 53,070 |
Money market funds | 6,578 |  |  | — |  |  | — |  |  | 6,578 |  |  | 18,124 |  |  | — |  |  | — |  |  | 18,124 |
Municipal debt securities | 17,267 |  |  | — |  |  | (34) |  |  | 17,233 |  |  | 20,263 |  |  | — |  |  | (5) |  |  | 20,258 |
Total | $ | 86,615 |  |  | $ | — |  |  | $ | (196) |  |  | $ | 86,419 |  |  | $ | 91,522 |  |  | $ | — |  |  | $ | (70) |  |  | $ | 91,452 |
Schedule of Marketable Securities | Estimated fair values of available-for-sale securities are generally based on prices obtained from commercial pricing services. The following table summarizes the classification of the available-for-sale securities in our Consolidated Balance Sheets (in thousands):
| March 31, 2022 |  | December 31, 2021
Cash equivalents | $ | 10,647 |  |  | $ | 21,129 |
Marketable securities | 75,772 |  |  | 70,323 |
Total | $ | 86,419 |  |  | $ | 91,452 |
Investments Classified by Contractual Maturity Date | The following table summarizes our portfolio of available-for-sale securities by contractual maturity (in thousands):
| March 31, 2022
| Amortized Cost |  | Estimated Fair Value
Less than one year | $ | 86,615 |  |  | $ | 86,419 |
Greater than one year |  |  | — |
Total | $ | 86,615 |  |  | $ | 86,419 |

X
- References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesAbstract
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: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
Name: | us-gaap_MarketableSecuritiesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration