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Note H - Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

		Balance as of September 30, 2022				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Deerfield Warrant liability		$	30			$	—			$	—			$	30
Embedded Warrant Put Option			4				—				—				4
KVK Warrant liability			1				—				1				—
Total liabilities		$	35			$	—			$	1			$	34
			—
Securities:
U.S. government-sponsored agency securities		$	7,171			$	—			$	7,171			$	—
Certificates of deposit			20,475				20,475				—				—
U.S. Treasury securities			9,649				9,649				—				—
Total assets		$	37,295			$	30,124			$	7,171			$	—

		Balance as of December 31, 2021				Quoted Prices in Active Markets for Identical Assets (Level 1)				Significant Other Observable Inputs (Level 2)				Significant Unobservable Inputs (Level 3)
Deerfield Warrant liability		$	288			$	—			$	—			$	288
Embedded Warrant Put Option			18				—				—				18
KVK Warrant liability			24				—				24				—
Total liabilities		$	330			$	—			$	24			$	306
Securities:
U.S. government-sponsored agency securities		$	4,997			$	—			$	4,997			$	—
Certificates of deposit			490				490				—				—
U.S. Treasury securities			9,935				9,935				—				—
Total assets		$	15,422			$	10,425			$	4,997			$	—

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

		Three months ended September 30,								Nine months ended September 30,
		2022				2021				2022				2021
Balance as of beginning of period		$	56			$	666			$	306			$	255
Adjustment to fair value			(22	)			(305	)			(272	)			106
Balance as of end of period		$	34			$	361			$	34			$	361

X

- Definition

Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability.

+ 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 (c)
-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

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X

- Definition

Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-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://www.xbrl.org/2003/role/disclosureRef
-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

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