Goodwill and Purchased Intangible Assets - (Tables)

12 Months Ended

Dec. 31, 2017

Identifiable Intangible Assets [Abstract]

Schedule of Purchased Intangible Assets

Purchased intangible assets as of December 31, 2017 and 2016 are as follows:

	Gross Carrying Amount		Accumulated Amortization		Net
December 31, 2017
Finite-lived intangibles:
Developed technology	$	65,827	$	58,522	$	7,305
Customer and distributor relationships		9,560		8,818		742
Trade names		4,361		3,776		585
Total identifiable intangible assets	$	79,748	$	71,116	$	8,632
December 31, 2016
Finite-lived intangibles:
Developed technology	$	65,527	$	56,986	$	8,541
Customer and distributor relationships		9,560		8,514		1,046
Trade names		4,361		3,675		686
Total identifiable intangible assets	$	79,448	$	69,175	$	10,273