Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2018

Summary of Gross Carrying Amount and Accumulated Amortization for Intangible Assets Resulting from Acquisitions

The following table summarizes the gross carrying amount and accumulated amortization for intangible assets resulting from acquisitions (in thousands):

				Developed			Customer
	Trademarks			Technology			Relationships			Total
Amortization period (in years)	5			10 – 12			4 – 12
Gross carrying amount at December 31, 2017	$	—		$	4,600		$	10,639		$	15,239
Accumulated amortization		—			(3,257	)		(7,617	)		(10,874	)
Intangible assets, net at December 31, 2017	$	—		$	1,343		$	3,022		$	4,365
Gross carrying amount at September 30, 2018	$	400		$	7,600		$	13,539		$	21,539
Accumulated amortization		(50	)		(3,779	)		(8,555	)		(12,384	)
Intangible assets, net at September 30, 2018	$	350		$	3,821		$	4,984		$	9,155

Amortization Expense Included in Condensed Consolidated Statements of Operations

The following table illustrates the amortization expense included in the condensed consolidated statements of operations for the three and nine months ended September 30, 2018 and 2017, respectively (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2018		2017		2018		2017
Cost of revenue	$	186	$	112	$	522	$	336
Selling and marketing		345		252		988		756
Total	$	531	$	364	$	1,510	$	1,092

Estimated Future Amortization Expense of Purchased Intangible Assets with Definite Lives

The estimated annual future amortization expense for purchased intangible assets with definite lives as of September 30, 2018 is as follows (in thousands):

2018 (remaining three months)	$	532
2019		2,125
2020		2,125
2021		670
2022		670
Thereafter		3,033
Total	$	9,155

3VR

Summary of Carrying Amount of Goodwill Resulting from Acquisition of 3VR

The following table summarizes the carrying amount of goodwill resulting from the acquisition of 3VR (in thousands):

	Premises		Credentials		Identity		All Other		Total
Balance at December 31, 2017	$	—	$	—	$	—	$	—	$	—
Acquisition of business		5,781		—		—		—		5,781
Balance at September 30, 2018	$	5,781	$	—	$	—	$	—	$	5,781