Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Other Intangible Assets

Other intangible assets (in thousands):

		As of December 31,
		2018						2017
		Gross Amount		Accumulated Amortization		Net		Gross Amount		Accumulated Amortization		Net
Amortizing intangible assets:
	Customer relationships	$	30,993	$	30,993	$	—	$	32,286	$	31,997	$	289
	Developed technology	24,446		24,446		—		25,177		25,177		—
	Patents, trademarks and tradenames	3,765		3,765		—		3,932		3,896		36
	Service contracts	5,538		5,512		26		5,576		5,576		—
	Total	$	64,742	$	64,716	$	26	$	66,971	$	66,646	$	325

Schedule of Expected Amortization Expense

Estimated future amortization of other intangible assets (in thousands):

2019	26
Total	$	26

No impairments of other intangible assets were recognized in 2018, 2017 or 2016.