Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill And Other Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill [Table Text Block]

									Weighted
									Average
		December 31, 2016				December 31, 2015			Life	(a)
		(in thousands)
Amortizable intangible assets:		Gross		Accumulated Amortization		Gross		Accumulated Amortization
Existing technology	$	15,082	$	(11,710)	$	16,022	$	(11,686)	7.0	Years
Trade names		7,379		(3,479)		7,636		(3,076)	8.0	Years
Distribution agreements/customer relationships		22,976		(12,862)		23,676		(11,849)	9.0	Years
Patents		204		(119)		245		(96)	2.2	Years
Total amortizable intangible assets		45,641	$	(28,170)		47,579	$	(26,707)
Indefinite-lived intangible assets:
Goodwill		38,032				40,357
Other indefinite-lived intangible assets		1,209				1,223
Total goodwill and other indefinite-lived intangible assets		39,241				41,580
Total intangible assets	$	84,882			$	89,159
(a) Weighted average life as of December 31, 2016.

Goodwill Rollforward [Table Text Block]

			(in thousands)
Balance at December 31, 2014		$	39,822
	Goodwill arising from business combination		1,618
	Adjustment to purchase price allocation of prior year acquisition		372
	Effect of change in currency translation		(1,455)
Balance at December 31, 2015			40,357
	Adjustment to purchase price allocation of prior year acquisition		50
	Adjustment to goodwill for AHN disposition		(484)
	Effect of change in currency translation		(1,891)
Balance at December 31, 2016		$	38,032