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Note 12 - Income Taxes (Tables)

12 Months Ended

Mar. 31, 2023

Notes Tables

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

		Year Ended March 31,
		2023				2022				2021
Domestic		$	1,887			$	4,579			$	6,297
Foreign			(2,276	)			(1,005	)			(3,994	)
Total (loss) earnings before income taxes		$	(389	)		$	3,574			$	2,303

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

		Year Ended March 31,
		2023				2022				2021
Current tax provision:
U.S. Federal		$	593			$	(83	)		$	1,500
U.S. State			538				286				628
Foreign			1,070				1,372				404
Total current tax expense			2,201				1,575				2,532
Deferred tax provision:
U.S. Federal			(1,432	)			1,707				(2,410	)
U.S. State			(210	)			337				(619	)
Foreign			(1,878	)			(1,916	)			(474	)
Total deferred tax (benefit) expense			(3,520	)			128				(3,503	)
Total income tax (benefit) expense		$	(1,319	)		$	1,703			$	(971	)

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

		Year Ended March 31,
		2023				2022				2021
Federal income taxes at statutory rates		$	(82	)		$	751			$	483
State income taxes, net of federal benefit			(1,075	)			628				(221	)
Tax benefit of stock option exercises			(1,169	)			(4,055	)			(1,816	)
Research and development credit			(1,010	)			(495	)			(165	)
Limitation for 162(m)			2,675				4,039				1,113
Return to provision adjustment			(125	)			(68	)			(172	)
Subpart F, GILTI, & FDII			(127	)			6				(999	)
Foreign rate differential			(439	)			152				810
Permanent Difference			33				64				15
Interest reserve adjustment			-				668				-
Other			-				13				(19	)
Total income tax (benefit) expense		$	(1,319	)		$	1,703			$	(971	)

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

		March 31, 2023				March 31, 2022
Deferred tax assets:
Net operating loss		$	6,945			$	11,274
Credits			4,769				5,321
Allowances and reserves			2,376				1,977
Capitalized research expenditures(1)			3,124				-
Stock compensation deductible differences			1,384				2,137
Inventories			1,348				1,316
Other			188				394
Total deferred tax assets			20,134				22,419
Deferred tax liabilities:
Goodwill and intangible assets			(49,781	)			(56,145	)
Property, plant and equipment			(2,502	)			(3,284	)
Other			(221	)			(188	)
Total deferred tax liabilities			(52,504	)			(59,617	)
Valuation allowance			(582	)			(708	)
Net deferred tax (liability)		$	(32,952	)		$	(37,906	)

Summary of Valuation Allowance [Table Text Block]

		Year Ended March 31,
		2023				2022				2021
Beginning balance		$	708			$	404			$	391
Additions charged to income tax expense and other accounts			567				304				13
Deductions from reserves			(693	)			-				-
Ending balance		$	582			$	708			$	404

Summary of Operating Loss Carryforwards [Table Text Block]

		March 31, 2023				Expiration Date
Pre-2018 federal NOL carryforwards		$	-				N/A
Post-2018 federal NOL carryforwards			2,819			Indefinite
State NOL carryforwards			7,210			March 31, 2037
Foreign NOL carryforwards			22,262			Indefinite

Summary of Tax Credit Carryforwards [Table Text Block]

		March 31, 2023				Expiration Date
Federal research tax credit carryforwards		$	2,428			March 31, 2038
State research tax credits carryforwards			2,944			March 31, 2034
Federal foreign tax credit carryforwards			15			March 31, 2036

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

		Year Ended March 31,
		2023				2022				2021
Beginning balance		$	1,329			$	64			$	653
(Decrease) increase related to prior period tax positions			(1,272	)			1,179				(629	)
Increases related to current period tax positions			35				86				40
Ending balance		$	92			$	1,329			$	64

Summary of Income Tax Examinations [Table Text Block]

Significant Jurisdictions		Open Years
U.S. Federal			2019 - 2021
U.S. States			2018 - 2021
Foreign			2016 - 2021

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