XML 51 R33.htm IDEA: XBRL DOCUMENT v3.23.1

Note 4 - Investments (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Debt Securities, Available-for-Sale [Table Text Block]

		December 31, 2022
		Amortized				Gross unrealized								Estimated
(In thousands)		Cost				Gains				Losses				Fair Value
Available-for-sale securities, current portion
U.S. government securities		$	15,087			$	1			$	37			$	15,051
Corporate debt securities			26,057				6				16				26,047
Other debt securities			2,169				-				7				2,162
Total short-term			43,313				7				60				43,260
Available-for-sale securities, long-term
Other debt securities			1,329				3				-				1,332
Total marketable securities		$	44,642			$	10			$	60			$	44,592

		Amortized				Estimated
(In thousands)		Cost				Fair Value
Due in one year or less		$	43,313			$	43,260
Due after one year through five years			1,329				1,332
Total		$	44,642			$	44,592

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 https://asc.fasb.org/topic&trid=2196928

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_TableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration