v3.22.2.2

Note 13 - Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

		Three Months Ended September 30,								Nine Months Ended September 30,
		2022				2021				2022				2021
Cost of goods sold		$	13			$	24			$	48			$	67
Research and development			139				216				466				597
Selling, general and administrative			549				981				1,723				2,818
Total		$	701			$	1,221			$	2,237			$	3,482

Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

						Weighted
		Number of				Average
		Restricted				Grant Date
		Stock Units				Fair Value
Restricted stock units outstanding, January 1, 2022			88,718			$	34.20
Granted			58,516				7.80
Vested			(44,232	)			35.60
Forfeited			(16,324	)			25.40
Restricted stock units outstanding, September 30, 2022			86,678			$	17.20

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

		Number of Stock Options Outstanding				Weighted- Average Exercise Price				Weighted- Average Remaining Contractual Life (Years)				Aggregate Intrinsic Value
														(in thousands)
January 1, 2022			714,202			$	59.80
Granted			117,032				7.80
Forfeited			(29,034	)			27.20
Expired			(68,892	)			60.80
Exercised			—				—
September 30, 2022			733,308			$	52.60				5.8			$	—
Vested and exercisable options—September 30, 2022			505,825			$	66.40				4.5			$	—
Vested and expected to vest—September 30, 2022			733,308			$	52.60				5.8			$	—

Performance Shares [Member]

Notes Tables

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

		Nine months ended September 30, 2022
Expected term (in years)				6.3
Risk-free interest rate			1.6%	-	3.0%
Expected volatility				88%
Expected dividend rate				0%

X

- Definition

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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