During fiscal year 2023, the decrease in the Company’s goodwill relating to its continuing operations primarily related to the derecognition of an insignificant amount (approximately $8.5 million) of goodwill during the fourth quarter of fiscal year 2023 in our government systems segment that was previously not classified as held for sale. See Note 4 — Discontinued Operations — for more information on discontinued operations. Additionally, the Company recorded an insignificant decrease of goodwill related to foreign currency translation effects across all three segments. During fiscal year 2022, the increase in the Company’s goodwill primarily related to the acquisitions of the remaining 51% interest in EBI and of RigNet on April 30, 2021 (see Note 5 — Acquisitions for more information), partially offset by foreign currency translation effects recorded within all three of the Company’s segments.

Other acquired intangible assets are amortized using the straight-line method over their estimated useful lives of two to 20 years (which approximates the economic pattern of benefit). Amortization expense related to other acquired intangible assets was $29.8 million, $28.7 million and $5.5 million for the fiscal years ended March 31, 2023, 2022 and 2021, respectively.

The expected amortization expense of amortizable acquired intangible assets may change due to the effects of foreign currency fluctuations as a result of international businesses acquired. Expected amortization expense for acquired intangible assets for each of the following periods is as follows:


	Amortization
	(In thousands)
Expected for fiscal year 2024	$	28,635
Expected for fiscal year 2025		26,560
Expected for fiscal year 2026		26,408
Expected for fiscal year 2027		26,408
Expected for fiscal year 2028		26,331
Thereafter		66,863
	$	201,205

Other acquired intangible assets and the related accumulated amortization as of March 31, 2023 and 2022 is as follows:


			As of March 31, 2023							As of March 31, 2022
	Weighted Average Useful Life		Total		Accumulated Amortization			Net Book Value		Total		Accumulated Amortization			Net Book Value
	(In years)		(In thousands)
Technology		7	$	151,327	$	(83,949	)	$	67,378	$	154,624	$	(71,582	)	$	83,042
Contracts and customer relationships		11		132,563		(34,202	)		98,361		164,635		(53,250	)		111,385
Satellite co-location rights		9		8,600		(8,600	)		—		8,600		(8,600	)		—
Trade name		7		32,253		(12,657	)		19,596		32,463		(9,097	)		23,366
Other		11		21,782		(5,912	)		15,870		22,263		(4,013	)		18,250
Total other acquired intangible assets		9	$	346,525	$	(145,320	)	$	201,205	$	382,585	$	(146,542	)	$	236,043

In fiscal years 2023 and 2022, the gross amount and accumulated amortization for acquired identifiable intangible assets were reduced by the retirement of fully amortized assets that were no longer in use.