Note 18 - Stock Option Plans (Tables)

12 Months Ended

Jan. 31, 2022

Notes Tables

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

	Year Ended January 31,
	2022			2021
Risk free interest rate		0.72% - 0.72%			0.34% - 0.37%
Expected life (in years)		3.97 - 5.97			3.97 - 5.97
Expected volatility		63% - 63%			53% - 64%
Expected dividend yield		0.00	%		0.00	%

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

						Weighted
						Average
				Weighted		Remaining		Aggregate
	Number of			Average		Contractual		Intrinsic
	Shares			Exercise		Term		Value
	(in thousands)			Price		(in years)		(in thousands)
Outstanding, January 31, 2021		2,586		$	4.09		6.58	$	222
Granted		875			1.97
Exercised		—			—
Forfeited		(10	)		3.79
Expired		(26	)		6.28
Outstanding, January 31, 2022		3,425		$	3.53		6.58	$	100
Exercisable at January 31, 2022		2,158		$	4.34		5.19	$	—
Vested and expected to vest at January 31, 2022		3,361		$	3.60		6.54	$	99

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

	Year Ended January 31, 2022
	Number of			Weighted Average
	Shares			Grant Date Fair
	(in thousands)			Value
Unvested, beginning of period		40		$	2.94
Granted		—			—
Vested		(18	)		3.19
Canceled		—			—
Unvested, end of period		22		$	2.76