Orion recorded goodwill of $0.4 million and intangibles of $0.7 million related to its purchase of Stay-Lite Lighting during fiscal 2022. The goodwill is assigned to the Orion Services Group reporting unit. See Note 20 – Acquisition for further discussion of the Stay-Lite Lighting acquisition.

The costs of specifically identifiable intangible assets that do not have an indefinite life are amortized over their estimated useful lives. Goodwill and intangible assets with indefinite lives are not amortized.

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:

Goodwill and intangible assets that have a definite life are evaluated for potential impairment whenever events or circumstances indicate that the carrying value may not be recoverable based primarily upon whether expected future undiscounted cash flows are sufficient to support the asset recovery. If the actual useful life of the asset is shorter than the estimated life, the asset may be deemed to be impaired and accordingly a write-down of the value of the asset determined by a discounted cash flow analysis or shorter amortization period may be required.

Indefinite lived intangible assets are evaluated for impairment at least annually on the first day of Orion’s fiscal fourth quarter, or when indications of potential impairment exist. This annual impairment review may begin with a qualitative test to determine whether it is more likely than not that an indefinite lived intangible asset's carrying value is greater than its fair value. If the qualitative assessment reveals that asset impairment is more likely than not, a quantitative impairment test is performed comparing the fair value of the indefinite lived intangible asset to its carrying value. Alternatively, the qualitative test may be bypassed and the quantitative impairment test may be immediately performed. If the fair value of the indefinite lived intangible asset exceeds its carrying value, the indefinite lived intangible asset is not impaired and no further review is performed. If the carrying value of the indefinite lived intangible asset exceeds its fair value, an impairment loss would be recognized in an amount equal to such excess. Once an impairment loss is recognized, the adjusted carrying value becomes the new accounting basis of the indefinite lived intangible asset.

Orion performed a qualitative assessment in conjunction with its annual impairment test of its indefinite lived intangible assets as of January 1, 2022. This qualitative assessment considered Orion’s operating results for the first nine months of fiscal 2022 in comparison to prior years as well as its anticipated fourth quarter results and fiscal 2023 plan. As a result of the conditions that existed as of the assessment date, an asset impairment was not deemed to be more likely than not and a quantitative analysis was not required.

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

As of March 31, 2022, the weighted average useful life of definite life intangible assets was 8.0 years. The estimated amortization expense for each of the next five years is shown below (dollars in thousands):

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

Orion’s management periodically reviews the carrying value of patent applications and related costs. When a patent application is probable of being unsuccessful or a patent is no longer in use, Orion writes off the remaining carrying value as a charge to general and administrative expense within its Consolidated Statements of Operations. In fiscal years 2022, 2021, and 2020, write-offs were immaterial.