XML 20 R10.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

MARKETABLE INVESTMENT SECURITIES | 3 Months Ended
--- | ---
Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract] |
MARKETABLE INVESTMENT SECURITIES | MARKETABLE INVESTMENT SECURITIES The amortized cost, gross unrealized holding gains, gross unrealized holding losses, and fair value for debt securities classified as available-for-sale securities by major security type and class of security at March 31, 2024 and December 31, 2023 were as follows:
(in millions) | Amortized cost |  | Gross unrealized holding gains |  | Gross unrealized holding losses |  | Estimated fair value
March 31, 2024 |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |
Cash | $ | 93.1 |  |  | $ | — |  |  | $ | — |  |  | $ | 93.1 |
Cash equivalents | 3.8 |  |  | — |  |  | — |  |  | 3.8 |
Total cash and cash equivalents | 96.9 |  |  | — |  |  | — |  |  | 96.9 |
Available-for-sale: |  |  |  |  |  |  |
Corporate bonds and notes | 6.9 |  |  | — |  |  | (0.1) |  |  | 6.8 |
Municipal bonds | 0.6 |  |  | — |  |  | — |  |  | 0.6 |
Federal agency issues | — |  |  | — |  |  | — |  |  | — |
Total | $ | 104.4 |  |  | $ | — |  |  | $ | (0.1) |  |  | $ | 104.3 |
(in millions) | Amortized cost |  | Gross unrealized holding gains |  | Gross unrealized holding losses |  | Estimated fair value
December 31, 2023 |  |  |  |  |  |  |
Cash and cash equivalents: |  |  |  |  |  |  |
Cash | $ | 129.9 |  |  | $ | — |  |  | $ | — |  |  | $ | 129.9 |
Cash equivalents | 2.2 |  |  | — |  |  | — |  |  | 2.2 |
Total cash and cash equivalents | 132.1 |  |  | — |  |  | — |  |  | 132.1 |
Available-for-sale: |  |  |  |  |  |  |
Corporate bonds and notes | 8.4 |  |  | — |  |  | (0.1) |  |  | 8.3 |
Municipal bonds | 0.5 |  |  | — |  |  | — |  |  | 0.5 |
Total | $ | 141.0 |  |  | $ | — |  |  | $ | (0.1) |  |  | $ | 140.9 |
Cash, cash equivalents, and maturities of debt securities classified as available-for-sale securities were as follows at March 31, 2024:
(in millions) | Amortized cost |  | Estimated fair value
Cash | $ | 93.1 |  |  | $ | 93.1 |
Cash equivalents | 3.8 |  |  | 3.8 |
Available-for-sale: |  |  |
Due within one year | 7.5 |  |  | 7.4 |
Total | $ | 104.4 |  |  | $ | 104.3 |
The cost of a security sold, or amount reclassified out of accumulated other comprehensive income or loss into net loss, is determined based on the specific identification method. The Company does not intend to sell these available-for-sale debt securities, and it is not more likely than not that the Company will be required to sell these securities prior to recovery of their amortized cost basis. Additional information relating to fair value of marketable investment securities can be found in Note 4.

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://www.xbrl.org/2003/role/disclosureRef -Topic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//320/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-10 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-6B Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-6B Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (b) -Publisher SEC Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//946-320/tableOfContent Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 940 -SubTopic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//940-320/tableOfContent Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//942-320/tableOfContent + Details
Name: | us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration