Intangible Assets and Software Development Costs

The following table summarizes our intangible assets and software development costs at March 31, 2019, and 2018:



	2019							2018
	Gross					Net		Gross					Net
	carrying		Accumulated			carrying		carrying		Accumulated			carrying
(In thousands)	amount		amortization			amount		amount		amortization			amount
Amortized intangible assets:
Customer relationships	$	10,775	$	(10,775	)	$	—	$	10,775	$	(10,775	)	$	—
Non-competition agreements	2,700		(2,700		)	—		2,700		(2,700		)	—
Developed technology	10,398		(10,398		)	—		10,398		(10,398		)	—
Trade names	230		(192		)	38		230		(146		)	84
Patented technology	80		(80		)	—		80		(80		)	—
	24,183		(24,145		)	38		24,183		(24,099		)	84
Trade names	8,400		N/A			8,400		8,400		N/A			8,400
Total intangible assets	$	32,583	$	(24,145	)	$	8,438	$	32,583	$	(24,099	)	$	8,484

Software development costs	$	67,541	$	(32,974	)	$	34,567	$	53,368	$	(20,372	)	$	32,996
Project expenditures not yet in use	—		—			—		12,185		—			12,185
Total software development costs	$	67,541	$	(32,974	)	$	34,567	$	65,553	$	(20,372	)	$	45,181

Indefinite-lived intangible assets, comprised of our purchased trade name InfoGenesis™ as of March 31, 2019 and 2018 are tested for impairment upon identification of impairment indicators or at least annually. An impairment loss is recognized if the carrying amount is greater than fair value. The InfoGenesis™ indefinite-lived purchased trade name impairment testing resulted in a fair value exceeding the carrying amount for the years ending March 31, 2019, 2018 and 2017.

At each balance sheet date, the unamortized capitalized software development costs for external use is compared to the net realizable value of that product by analyzing critical inputs such as costs necessary to bring the software to market, life of the software, and market capacity. The amount by which unamortized software costs exceeds the net realizable value, if any, is recognized as a charge to income in the period it is determined.

The following table summarizes our remaining estimated amortization expense relating to in service intangible assets and software development costs.



	Estimated
	Amortization
(In thousands)	Expense
Fiscal year ending March 31,
2020	$	12,599
2021	12,515
2022	5,403
2023	3,399
2024	689
Total	$	34,605

Amortization expense related to software development costs related to assets to be sold, leased, or otherwise marketed was $12.6 million, $10.0 million and $8.0 million for the fiscal years ended March 31, 2019, 2018 and 2017, respectively. These charges are included as Products cost of goods sold within the Consolidated Statements of Operations. Amortization expense relating to other definite-lived intangible assets was $46,000 for the fiscal years ended March 31, 2019, 2018 and 2017. These charges are classified as operating expenses within the Consolidated Statements of Operations.

Capitalized software development costs are carried on our balance sheets at net realizable value, net of accumulated amortization. We capitalized approximately $2.0 million, $8.2 million and $11.9 million during fiscal 2019, 2018 and 2017, respectively.