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Investments in Marketable Debt Securities, Available-for-Sale (Tables)

12 Months Ended

Dec. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule of Debt Securities, Available-for-sale

Amortized cost, gross unrealized gains/losses in accumulated other comprehensive loss and fair value of marketable debt securities, available-for-sale, by type of security for the year ended December 31, 2021 consisted of the following (in thousands):

			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
Short-term investments:
Corporate debt security			$	71,406					$	—					$	(57)					$	71,349
U.S. treasuries			3,415						—						(7)						3,408
Asset-backed security and other			2,555						—						(4)						2,551
Non-U.S. government and supranational bonds			16,405						1						(19)						16,387
Certificate of deposit			1,001						—						—						1,001
			$	94,782					$	1					$	(87)					$	94,696
Long-term investments:
Corporate debt security			$	42,703					$	—					$	(246)					$	42,457
U.S. treasuries			2,201						—						(5)						2,196
Asset-backed security and other			5,438						—						(28)						5,410
Non-U.S. government and supranational bonds			3,769						—						(16)						3,753
Certificate of deposit			1,000						—						—						1,000
			$	55,111					$	—					$	(295)					$	54,816

Schedule of investments in available-for-sale securities that have been in a continuous unrealized loss position

The Company’s investment in marketable debt securities, available-for-sale that have been in a continuous unrealized loss position by type of security for the year ended December 31, 2021 consisted of the following (in thousands):

			Less than 12 months												12 months or greater												Total
			Fair Value						Gross Unrealized Losses						Fair Value						Gross Unrealized Losses						Fair Value						Gross Unrealized Losses
Corporate debt security			$	113,806					$	(303)					$	—					$	—					$	113,806					$	(303)
US treasuries			5,604						(12)						—						—						5,604						(12)
Asset-backed security and other			7,961						(32)						—						—						7,961						(32)
Non-U.S. government and supranational bonds			20,140						(34)						—						—						20,140						(34)
Certificates of deposit			2,001						—						—						—						2,001						—
			$	149,512					$	(381)					$	—					$	—					$	149,512					$	(381)

Schedule of Realized Gain (Loss)

Gross realized gains and gross realized losses from the sales of the Company’s marketable debt securities, available-for-sale for the year ended December 31, 2021 consisted of the following (in thousands):

			December 31, 2021						December 31, 2020
Gross realized gains			$	—					$	—
Gross realized losses			$	(1)					$	—

Schedule of marketable securities, available-for-sale, by contractual maturity

Amortized cost and fair value of marketable debt securities, available-for-sale by contractual maturity for the year ended December 31, 2021 consisted of the following (in thousands, except weighted average data):    

			Amortized Cost						Fair Value
Due in one year or less			$	95					$	95
Due after one year through five years			55						55
			$	150					$	150
Weighted average contractual maturity									0.8 years

X

- Definition

Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-URI http://asc.fasb.org/topic&trid=2196928

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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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456

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-Publisher FASB
-Name Accounting Standards Codification
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Tabular disclosure of the proceeds from sales of available-for-sale securities and the gross realized gains and gross realized losses that have been included in earnings as a result of those sales.

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