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Acquisitions (2013 Acquisitions) (Narrative) (Details) - USD ($) $ in Thousands													12 Months Ended
	Dec. 17, 2014	Dec. 31, 2013	Dec. 23, 2013	Dec. 13, 2013	Dec. 04, 2013	Sep. 06, 2013	Aug. 20, 2013	Aug. 06, 2013	Jul. 15, 2013	May. 01, 2013	Feb. 27, 2013	Jan. 09, 2013	Dec. 31, 2015	Dec. 31, 2013	Dec. 31, 2014
Business Acquisition [Line Items]
Acquisition date													Dec. 17, 2014
Consideration paid in cash	$ 54,552
Co-Web [Member]
Business Acquisition [Line Items]
Acquisition date													Jan. 09, 2013
Acquired ownership percentage												100.00%
Consideration paid in cash												$ 262
Geomagic [Member]
Business Acquisition [Line Items]
Acquisition date													Feb. 27, 2013
Acquired ownership percentage											100.00%
Consideration paid in cash											$ 52,687
RPDG [Member]
Business Acquisition [Line Items]
Acquisition date													May 01, 2013
Fair value of consideration paid										$ 44,413
Consideration paid in cash										33,163
Consideration paid in shares										6,750
Deferred purchase price										4,500
Deferred purchase price in cash										3,750
Deferred purchase price in shares										$ 750
Deferred purchase price term														12 months
Phenix Systems [Member]
Business Acquisition [Line Items]
Acquisition date													Jul. 15, 2013
Acquired ownership percentage									82.00%				95.00%		95.00%
Consideration paid in cash									$ 16,975
VisPower Technology Inc. [Member]
Business Acquisition [Line Items]
Acquisition date													Aug. 06, 2013
Acquired ownership percentage								100.00%
Consideration paid in cash								$ 4,998
CDRM [Member]
Business Acquisition [Line Items]
Acquisition date													Aug. 20, 2013
Acquired ownership percentage							100.00%
Consideration paid in cash							$ 6,399
The Sugar Lab [Member]
Business Acquisition [Line Items]
Acquisition date													Sep. 06, 2013
Fair value of consideration paid						$ 1,500
Consideration paid in cash						1,000
Consideration paid in shares						$ 500
Figulo Corporation [Member]
Business Acquisition [Line Items]
Acquisition date													Dec. 04, 2013
Acquired ownership percentage					100.00%
Fair value of consideration paid					$ 2,846
Consideration paid in cash					1,996
Consideration paid in shares					$ 850
Village Plastics Co. [Member]
Business Acquisition [Line Items]
Acquisition date													Dec. 13, 2013
Acquired ownership percentage				100.00%
Fair value of consideration paid				$ 6,361
Consideration paid in cash				4,361
Consideration paid in shares				$ 2,000
Gentle Giant Studios, Inc. [Member]
Business Acquisition [Line Items]
Acquisition date													Dec. 23, 2013
Acquired ownership percentage			100.00%
Fair value of consideration paid			$ 10,650
Consideration paid in cash			7,975
Consideration paid in shares			$ 2,675
Xerox Corporation's Wilsonville, Oregon [Member]
Business Acquisition [Line Items]
Acquisition date													Dec. 31, 2013
Consideration paid in cash		$ 32,500

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