OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Mar. 31, 2019

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
Non-competition agreements	5 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, 2019							March 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Patents	$	2,667	$	(1,529	)	$	1,138	$	2,636	$	(1,370	)	$	1,266
Licenses		58		(58	)		—		58		(58	)		—
Trade name and trademarks		1,007		—			1,007		1,005		—			1,005
Customer relationships		3,600		(3,459	)		141		3,600		(3,326	)		274
Developed technology		900		(717	)		183		900		(582	)		318
Non-competition agreements		—		—			—		100		(95	)		5
Total	$	8,232	$	(5,763	)	$	2,469	$	8,299	$	(5,431	)	$	2,868

Summary of Estimated Amortization Expense

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

Fiscal 2020	$	363
Fiscal 2021		288
Fiscal 2022		191
Fiscal 2023		100
Fiscal 2024		96
Thereafter		424
	$	1,462

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

	Fiscal Year Ended March 31,
	2019		2018		2017
Amortization included in cost of sales:
Patents	$	171	$	159	$	158
Total	$	171	$	159	$	158
Amortization included in operating expenses:
Customer relationships	$	133	$	272	$	542
Developed technology		135		156		161
Non-competition agreements		5		20		20
Patents		—		—		—
Total		273		448		723
Total amortization of intangible assets	$	444	$	607	$	881