Other Intangibles, Net (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Summary of other intangible assets
Other Intangibles, Gross	$ 118,226
Accumulated Amortization	(94,931)
Other intangibles, net	23,295
Finite-Lived Other Intangible Assets, Gross
Gross, balance at beginning of period	116,816
Additions	988
Gross, translation adjustments	422
Gross, balance at end of period	118,226
Finite-Lived Intangible Assets, Accumulated Amortization
Accumulated Amortization, balance at beginning of period	(89,424)
Amortization	(5,267)
Accumulated amortization, translation adjustments	(240)
Accumulated Amortization, balance at end of period	(94,931)
Finite-Lived Intangible Assets, Net
Net, balance at beginning of period	27,392
Additions	988
Amortization	(5,267)
Net, translation adjustments	182
Net, balance at end of period	23,295
Developed Technology Rights [Member]
Summary of other intangible assets
Other Intangibles, Gross	72,565	71,235
Accumulated Amortization	(59,749)	(56,060)
Other intangibles, net	12,816	15,175
Finite-Lived Other Intangible Assets, Gross
Gross, balance at end of period	72,565	71,235
Finite-Lived Intangible Assets, Accumulated Amortization
Accumulated Amortization, balance at end of period	(59,749)	(56,060)
Finite-Lived Intangible Assets, Net
Net, balance at end of period	12,816	15,175
Purchased Technology [Member]
Summary of other intangible assets
Weighted Average Amortization Period	5 years 1 month 6 days	5 years 1 month 6 days
Other Intangibles, Gross	51,052	50,711
Accumulated Amortization	(41,456)	(38,877)
Other intangibles, net	9,596	11,834
Finite-Lived Other Intangible Assets, Gross
Gross, balance at beginning of period	50,711
Gross, balance at end of period	51,052	50,711
Finite-Lived Intangible Assets, Accumulated Amortization
Accumulated Amortization, balance at beginning of period	(38,877)
Accumulated Amortization, balance at end of period	(41,456)	(38,877)
Finite-Lived Intangible Assets, Net
Net, balance at beginning of period	11,834
Net, balance at end of period	9,596	11,834
Product Development Costs [Member]
Summary of other intangible assets
Weighted Average Amortization Period	3 years	3 years
Other Intangibles, Gross	21,513	20,524
Accumulated Amortization	(18,293)	(17,183)
Other intangibles, net	3,220	3,341
Finite-Lived Other Intangible Assets, Gross
Gross, balance at beginning of period	20,524
Gross, balance at end of period	21,513	20,524
Finite-Lived Intangible Assets, Accumulated Amortization
Accumulated Amortization, balance at beginning of period	(17,183)
Accumulated Amortization, balance at end of period	(18,293)	(17,183)
Finite-Lived Intangible Assets, Net
Net, balance at beginning of period	3,341
Net, balance at end of period	3,220	3,341
Other Technology Rights [Member]
Summary of other intangible assets
Other Intangibles, Gross	45,661	45,581
Accumulated Amortization	(35,182)	(33,364)
Other intangibles, net	10,479	12,217
Finite-Lived Other Intangible Assets, Gross
Gross, balance at end of period	45,661	45,581
Finite-Lived Intangible Assets, Accumulated Amortization
Accumulated Amortization, balance at end of period	(35,182)	(33,364)
Finite-Lived Intangible Assets, Net
Net, balance at end of period	10,479	12,217
Customer Relationships [Member]
Summary of other intangible assets
Weighted Average Amortization Period	6 years 4 months 24 days	6 years 4 months 24 days
Other Intangibles, Gross	41,010	40,936
Accumulated Amortization	(31,250)	(29,786)
Other intangibles, net	9,760	11,150
Finite-Lived Other Intangible Assets, Gross
Gross, balance at beginning of period	40,936
Gross, balance at end of period	41,010	40,936
Finite-Lived Intangible Assets, Accumulated Amortization
Accumulated Amortization, balance at beginning of period	(29,786)
Accumulated Amortization, balance at end of period	(31,250)	(29,786)
Finite-Lived Intangible Assets, Net
Net, balance at beginning of period	11,150
Net, balance at end of period	9,760	11,150
Other Intangible Assets [Member]
Summary of other intangible assets
Weighted Average Amortization Period	4 years 1 month 6 days	4 years 1 month 6 days
Other Intangibles, Gross	4,651	4,645
Accumulated Amortization	(3,932)	(3,578)
Other intangibles, net	719	1,067
Finite-Lived Other Intangible Assets, Gross
Gross, balance at beginning of period	4,645
Gross, balance at end of period	4,651	4,645
Finite-Lived Intangible Assets, Accumulated Amortization
Accumulated Amortization, balance at beginning of period	(3,578)
Accumulated Amortization, balance at end of period	(3,932)	(3,578)
Finite-Lived Intangible Assets, Net
Net, balance at beginning of period	1,067
Net, balance at end of period	$ 719	$ 1,067