GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Mar. 31, 2022

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Amortizable Intangible Assets

Amortizable intangible assets are amortized over their estimated economic useful life to reflect the pattern of economic benefits consumed based upon the following lives and methods:

Patents	10-17 years	Straight-line
Licenses	7-13 years	Straight-line
Customer relationships	5-8 years	Accelerated based upon the pattern of economic benefits consumed
Developed technology	8 years	Accelerated based upon the pattern of economic benefits consumed
Tradename	5-10 years	Straight-line

Summary of Components and Changes in Other Intangible Assets

The components of, and changes in, the carrying amount of other intangible assets were as follows (dollars in thousands):

	March 31, 2022							March 31, 2021
	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Amortized Intangible Assets
Patents	$	2,652	$	(1,932	)	$	720	$	2,796	$	(1,875	)	$	921
Licenses		58		(58	)		—		58		(58	)		—
Trade name and trademarks		118		(6	)		112		—		—			—
Customer relationships		4,178		(3,618	)		560		3,600		(3,591	)		9
Developed technology		900		(900	)		—		900		(889	)		11
Total Amortized Intangible Assets	$	7,906	$	(6,514	)	$	1,392	$	7,354	$	(6,413	)	$	941
Indefinite-lived Intangible Assets
Trade name and trademarks	$	1,012	$	—		$	1,012	$	1,011	$	—		$	1,011
Total Indefinite-lived Intangible Assets	$	1,012	$	—		$	1,012	$	1,011	$	—		$	1,011
Total Other Intangible Assets	$	8,918	$	(6,514	)	$	2,404	$	8,365	$	(6,413	)	$	1,952

Summary of Estimated Amortization Expense

The estimated amortization expense for each of the next five years is shown below (dollars in thousands): 

Fiscal 2023	$	207
Fiscal 2024		203
Fiscal 2025		195
Fiscal 2026		184
Fiscal 2027		163
Thereafter		440
	$	1,392

Amortization expense is set forth in the following table (dollars in thousands):

	Fiscal Year Ended March 31,
	2022		2021		2020
Amortization included in cost of sales:
Patents	$	183	$	175	$	171
Total	$	183	$	175	$	171
Amortization included in operating expenses:
Customer relationships	$	27	$	47	$	86
Developed technology		11		68		102
Tradename		6		—		—
Total		44		115		188
Total amortization of intangible assets	$	227	$	290	$	359