Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in Gross Carrying Amount of Goodwill

The following table displays the changes in the gross carrying amount of goodwill:

	Amount
	(in thousands)
Balance at December 31, 2014	$	11,265
NTO acquisition accounting adjustments		4,590
Logentries acquisition accounting adjustments		58,710
Balance at December 31, 2015	$	74,565
Logentries acquisition accounting adjustments		545
Balance at December 31, 2016	$	75,110

Schedule of Identifiable Intangible Assets

Identifiable intangible assets consist of the following:

			As of December 31, 2016						As of December 31, 2015
	Weighted- Average Life (years)		Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
			(in thousands)
Intangible assets subject to amortization:
Developed technology		6.3	$	11,231	$	(3,118)	$	8,113	$	12,851	$	(2,955)	$	9,896
Customer relationships		6.7		1,000		(197)		803		1,000		(43)		957
Trade names		6.1		519		(496)		23		719		(389)		330
Non-compete agreements		2.0		40		(33)		7		540		(338)		202
Total intangible assets			$	12,790	$	(3,844)	$	8,946	$	15,110	$	(3,725)	$	11,385

Schedule of Estimated Amortization Expense

Estimated future amortization expense of the acquired identifiable intangible assets as of December 31, 2016 is as follows (in thousands):

2017	$	1,930
2018		1,886
2019		1,859
2020		1,837
2021		1,332
2022 and thereafter		102
Total	$	8,946