Goodwill and Other Intangibles (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Goodwill consists of the following:

	As of December 31,
	2017		2016
Balance at beginning of year	$	23,426	$	17,789
Additions for acquisitions		—		5,660
Purchase accounting adjustments		257		—
Effects of currency exchange		161		(23	)
Balance at end of year	$	23,844	$	23,426

Components of Identifiable Intangible Assets

Other intangibles consist of the following:

	December 31, 2017						December 31, 2016
	Gross				Net		Gross				Net
	Carrying		Accumulated		Carrying		Carrying		Accumulated		Carrying
	Value		Amortization		Value		Value		Amortization		Value
	(in thousands)
Product technology and intellectual property	$	10,267	$	4,908	$	5,359	$	10,173	$	4,017	$	6,156
Trademarks, tradenames and licenses		1,948		1,468		480		1,939		1,359		580
Customer relationships		5,383		3,299		2,084		5,216		2,588		2,628
Other intangible assets		1,575		1,264		311		1,558		1,025		533
Total identifiable intangible assets	$	19,173	$	10,939	$	8,234	$	18,886	$	8,989	$	9,897

Amortization Expense Included in General and Administrative Expense

Amortization expense is included in general and administrative expense and is as follows:

	Year ended December 31,
	2017		2016		2015
	(in thousands)
Amortization expense	$	1,790	$	1,605	$	1,513

Estimated Amortization Expense for Each of Five Succeeding Fiscal Years

Estimated amortization expense for each of the five succeeding fiscal years, based upon the intangible assets at December 31, 2017, is as follows:

	Year ended December 31,
	2018		2019		2020		2021		2022
	(in thousands)
Amortization expense	$	1,593	$	1,394	$	1,132	$	929	$	713