Goodwill and Acquired Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

Changes in the Carrying Amount of Goodwill

The changes in the carrying amount of goodwill for the period ended March 31, 2018 were as follows (in thousands):

Balance as of January 1	$	36,389
Changes during the three month period		-
Balance as of March 31	$	36,389

Summary of Acquired Intangible Assets Subject to Amortization

Acquired intangible assets subject to amortization are presented as follows (in thousands):

	As of March 31, 2018
	Weighted Average Remaining Useful life (years)		Gross Carrying Amount		Accumulated Amortization			Net Book Value
Acquired technology		5.8	$	3,753	$	(1,321	)	$	2,432
Customer relationships		5.7		480		(90	)		390
Trade name and other		5.7		280		(50	)		230
Total acquired intangibles		5.7	$	4,513	$	(1,461	)	$	3,052
	As of December 31, 2017
	Weighted Average Remaining Useful life (years)		Gross Carrying Amount		Accumulated Amortization			Net Book Value
Acquired technology		6.0	$	3,753	$	(1,216	)	$	2,537
Customer relationships		6.0		480		(71	)		409
Trade name and other		6.0		280		(42	)		238
Total acquired intangibles		6.0	$	4,513	$	(1,329	)	$	3,184

Schedule of Expected Amortization Expense in Future Periods

As of March 31, 2018, the amortization expense in future periods is expected to be as follows (in thousands):

	Acquired
Fiscal Year	Technology
2018 (remaining 9 months)		397
2019		529
2020		529
2021		529
Thereafter		1,068
Total expected amortization expense	$	3,052