3 .	Goodwill and Other Intangible Assets

The following is a summary of goodwill (in thousands):

Balance at March 31, 2016	$	14,490
Foreign currency translation adjustment		(42	)
Balance at March 31, 2017		14,448
Foreign currency translation adjustment		1,010
Balance at March 31, 2018	$	15,458

The following is a summary of other intangible assets (in thousands):

	March 3 1 , 201 8
	Gross Carrying Amount		Accumulated Amortization			Foreign Currency Translation Adjustment		Net Carrying Value
Acquired developed technology	$	5,034	$	(3,486	)	$	219	$	1,767
Customer relationships		5,857		(3,834	)		162		2,185
	$	10,891	$	(7,320	)	$	381	$	3,952

	March 3 1 , 201 7
	Gross Carrying Amount		Accumulated Amortization			Foreign Currency Translation Adjustment			Net Carrying Value
Acquired developed technology	$	5,034	$	(2,347	)	$	(50	)	$	2,637
Customer relationships		5,857		(2,599	)		(35	)		3,223
	$	10,891	$	(4,946	)	$	(85	)	$	5,860

Acquired developed technology and customer relationships are being amortized on a straight-line basis and have weighted-average remaining useful lives of

1.62

and

2.00

years, respectively, as of

March 31, 2018.

Amortization expense of intangible assets was

$2.2

million and

$2.1

million during the years ended

March 31, 2018

and

2017,

respectively.

As of

March 31, 2018,

approximate amortization expense for intangible assets for each of the next

five

years is as follows:

Year ended March 31:	(in thousands)
2019	$	2,166
2020		1,468
2021		318
2022		-
2023		-
Total	$	3,952