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Goodwill and Other Intangible Assets
6 Months Ended
Jun. 30, 2015
Goodwill And Other Intangible Assets Disclosure [Abstract]  
Goodwill And Other Intangible Assets Disclosure [Text Block]

4. Goodwill and Other Intangible Assets

Intangible assets consist of the following:

Weighted
Average
June 30, 2015December 31, 2014Life (a)
(in thousands)
Amortizable intangible assets:GrossAccumulated AmortizationGrossAccumulated Amortization
Existing technology$16,399$(11,508)$15,538$(11,198)7.6Years
Trade names7,698(2,826)7,114(2,557)9.5Years
Distribution agreements/customer relationships23,830(11,238)22,730(10,681)10.4Years
Patents259(76)256(49)3.7Years
Total amortizable intangible assets48,186$(25,648)45,638$(24,485)
Indefinite-lived intangible assets:
Goodwill41,08139,822
Other indefinite-lived intangible assets1,2281,252
Total goodwill and other indefinite-lived intangible assets42,30941,074
Total intangible assets$90,495$86,712
(a) Weighted average life as of June 30, 2015.

The change in the carrying amount of goodwill for the six months ended June 30, 2015 is as follows:

(in thousands)
Balance at December 31, 2014$39,822
Goodwill arising from business combinations2,061
Effect of change in currency translation(802)
Balance at June 30, 2015$41,081

Intangible asset amortization expense was $0.7 million and $0.6 million for the three months ended June 30, 2015 and 2014, respectively. Intangible asset amortization expense was $1.5 million and $1.2 million for the six months ended June 30, 2015 and 2014, respectively. Amortization expense of existing amortizable intangible assets is currently estimated to be $2.8 million for the year ending December 31, 2015, $2.8 million for the year ending December 31, 2016, $2.5 million for the year ending December 31, 2017, $2.4 million for the year ending December 31, 2018 and $2.2 million for the year ending December 31, 2019.