6. Intangible Assets

Our definite-lived intangible assets, other than capitalized software development costs, are summarized as follows, and reflects the acquisitions of Entrada, EagleDream and Inforth (see Note 4):

	June 30, 2018
	Customer			Software
	Relationships			Technology			Total
Gross carrying amount	$	54,450		$	94,310		$	148,760
Accumulated amortization		(36,698	)		(43,426	)		(80,124	)
Net intangible assets	$	17,752		$	50,884		$	68,636

	March 31, 2018
	Customer			Software
	Relationships			Technology			Total
Gross carrying amount	$	54,450		$	94,310		$	148,760
Accumulated amortization		(35,531	)		(39,138	)		(74,669	)
Net intangible assets	$	18,919		$	55,172		$	74,091

Amortization expense related to customer relationships and trade name and contracts recorded as operating expenses in the consolidated statements of comprehensive income was $1,168 and $2,047 for the three months ended June 30, 2018 and 2017, respectively. Amortization expense related to software technology recorded as cost of revenue was $4,287 and $3,401 for the three months ended June 30, 2018 and 2017, respectively.

The following table summarizes the remaining estimated amortization of definite-lived intangible assets as of June 30, 2018:

	Estimated Remaining Amortization Expense
	Operating Expense		Cost of Revenue		Total
For the year ended March 31,
2019 (remaining nine months)	$	3,177	$	12,864	$	16,041
2020		3,460		17,151		20,611
2021		2,803		13,268		16,071
2022		2,273		5,480		7,753
2023		1,866		1,761		3,627
2024 and beyond		4,173		360		4,533
Total	$	17,752	$	50,884	$	68,636