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Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-Sale Marketable Debt Securities

As of December 31, 2023, the weighted-average remaining contractual life, amortized cost, gross unrealized gains, gross unrealized losses, and fair value of marketable debt securities, which were considered as available-for-sale, by type of security were as follows (in thousands):

			December 31, 2023
			Weighted- Average Remaining Contractual Life (in years)						Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
Current:
Foreign bonds			0.8						$	54					$	—					$	—					$	54
Mutual funds									40						—						(1)						39
Current portion									94						—						(1)						93
Noncurrent:
Foreign bonds			3.3						939						—						(48)						891
Total									$	1,033					$	—					$	(49)					$	984

As of December 31, 2022, the weighted-average remaining contractual life, amortized cost, gross unrealized gains, gross unrealized losses, and fair value of marketable debt securities, which were considered as available-for-sale, by type of security were as follows (in thousands):

			December 31, 2022
			Weighted- Average Remaining Contractual Life (in years)						Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair  Value
Current:
Mutual funds									$	38					$	—					$	(2)					$	36
Noncurrent:
Foreign bonds			4.5						932						—						(92)						840
Total									$	970					$	—					$	(94)					$	876

Schedule of Accumulated Unrealized Losses on Debt Securities Classified as Available-for-Sale in Continuous Loss Position

Accumulated unrealized losses on marketable debt securities that have been in a continuous loss position for less than 12 months and more than 12 months were as follows (in thousands):

			December 31, 2023
			Less than 12 months												More than 12 months
			Estimated Fair Value						Gross Unrealized Losses						Estimated Fair Value						Gross Unrealized Losses
Mutual funds			$	39					$	(1)					$	—					$	—
Foreign bonds			891						(48)						—						—
Total			$	930					$	(49)					$	—					$	—

			December 31, 2022
			Less than 12 months												More than 12 months
			Estimated Fair Value						Gross Unrealized Losses						Estimated Fair Value						Gross Unrealized Losses
Mutual funds			$	—					$	—					$	36					$	(2)
Foreign bonds			—						—						840						(92)
Total			$	—					$	—					$	876					$	(94)

X

- Definition

Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479081/326-30-55-8

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-6

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479106/326-30-50-4

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- Definition

Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value.

+ References

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