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Fair Value Measurements of Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2022
Fair Value Disclosures [Abstract] |
Schedule of Assets Measured at Fair Value | Financial instruments measured at fair value were as follows:
| Fair value as of measurement date |  | Quoted prices in active markets for identical assets (Level 1) |  | Significant other observable inputs (Level 2) |  | Significant unobservable inputs (Level 3)
Balance as of December 31, 2022 |  |  |  |  |  |  |
Cash and cash equivalents (including money market funds) (1) | $ | 17.4 |  |  | $ | 17.4 |  |  | $ | — |  |  | $ | — |
Government securities (2) | $ | 5.6 |  |  | $ | — |  |  | $ | 5.6 |  |  | $ | — |
Corporate bonds (2) | $ | 7.2 |  |  | $ | — |  |  | $ | 7.2 |  |  | $ | — |
Deferred stock-based compensation (4) | $ | (4.7) |  |  | $ | — |  |  | $ | (4.7) |  |  | $ | — |
Put option liability (5) | $ | (5.1) |  |  | $ | — |  |  | $ | — |  |  | $ | (5.1) |
Balance as of January 1, 2022 |  |  |  |  |  |  |
Cash and cash equivalents (including money market funds) (1) | $ | 52.3 |  |  | $ | 52.3 |  |  | $ | — |  |  | $ | — |
Government securities (2) | $ | 5.5 |  |  | $ | — |  |  | $ | 5.5 |  |  | $ | — |
Corporate bonds (2) | $ | 7.8 |  |  | $ | — |  |  | $ | 7.8 |  |  | $ | — |
Derivative financial instruments - liability (3) | $ | (1.0) |  |  | $ | — |  |  | $ | (1.0) |  |  | $ | — |
Deferred stock-based compensation (4) | $ | (8.1) |  |  | $ | — |  |  | $ | (8.1) |  |  | $ | — |
Put option liability (5) | $ | (5.1) |  |  | $ | — |  |  | $ | — |  |  | $ | (5.1) |
Amounts in parentheses indicate liabilities. The index below indicates the line item in the Consolidated Balance Sheets where the financial instruments are reported: (1) "Cash and cash equivalents" (2) Current portion - "Short-term investments"; Long-term portion - "Other Assets" (3) Current portion - "Accounts payable and accrued expenses"; Long-term portion - "Other Long-Term Liabilities" (4) Current portion - "Current maturities of other long-term obligations"; Long-term portion - "Other Long-Term Liabilities" (5) "Other Long-Term Liabilities"

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- Definition Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19279-110258 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2C -URI https://asc.fasb.org/extlink&oid=126976982&loc=SL7498348-110258 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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