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Investments

12 Months Ended

Dec. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Investments

Note 4. Investments

The following tables summarize the Company’s investments accounted for as available-for-sale securities (in thousands, except years):

		December 31, 2021
		Maturity		Amortized				Unrealized				Unrealized				Estimated
		(in years)		cost				losses				gains				fair value
US treasury securities		1 or less		$	18,116			$	(19	)		$	—				18,097
Corporate debt securities		1 or less			2,824				(2	)			—				2,822
Commercial paper		1 or less			31,566				—				—				31,566
Supranational debt securities		1 or less			1,503				—				—				1,503
US treasury securities		1-2			44,911				(141	)							44,770
Total				$	98,920			$	(162	)		$	—			$	98,758

		December 31, 2020
		Maturity		Amortized				Unrealized				Unrealized				Estimated
		(in years)		cost				losses				gains				fair value
US treasury securities		1 or less		$	38,489			$	—			$	3			$	38,492
Corporate debt securities		1 or less			3,794				(1	)			—				3,793
Commercial paper		1 or less			11,040				—				—				11,040
Total				$	53,323			$	(1	)		$	3			$	53,325

As of December 31, 2021, there were 19 available-for-sale securities with an estimated fair value of $68.0 million in gross unrealized loss positions. As of December 31, 2020, there were six available-for-sale securities with an estimated fair value of $15.8 million in gross unrealized loss positions. None had been in such position for greater than 12 months. Based on the Company’s review of its investments, the Company believes that the unrealized losses were not other-than-temporary as of December 31, 2021 and 2020.

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- Definition

The entire disclosure for investments in certain debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-URI http://asc.fasb.org/subtopic&trid=2209399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-URI http://asc.fasb.org/subtopic&trid=2324412

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-URI http://asc.fasb.org/topic&trid=2196928

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 320
-URI http://asc.fasb.org/subtopic&trid=2176304

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1403
-Paragraph (b)

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