Summary Of Significant Accounting Policies (Narrative) (Details)	12 Months Ended				12 Months Ended				12 Months Ended
	Dec. 31, 2011 USD ($) years	Dec. 31, 2010 USD ($)	Dec. 31, 2009 USD ($)	Dec. 31, 2010 EUR (€)	Dec. 31, 2011 Buildings [Member] years	Dec. 31, 2011 Property, Plant And Equipment, Other Types [Member] years	Apr. 02, 2011 Continuing Operations [Member] USD ($)	Apr. 02, 2011 Discontinued Operations [Member] USD ($)	Dec. 31, 2011 Current Technology [Member] years	Dec. 31, 2011 Patent And Patent Rights [Member] years	Dec. 31, 2011 Customer Relationships [Member] years	Dec. 31, 2011 Equity-Based Compensation [Member] years	Dec. 31, 2011 Printers [Member]	Dec. 31, 2011 Printheads [Member]	Dec. 31, 2011 Batteries [Member]	Dec. 31, 2011 Battery Based Products [Member]
Summary Of Significant Accounting Policies [Line Items]
Restricted cash				€ 1,000,000
Property and equipment, estimated useful lives					30
Property and equipment, estimated useful lives, minimum, years						3
Property and equipment, estimated useful lives, maximum, years						10
Goodwill	79,703,000	79,703,000					9,114,000	72,795,000
Intangible assets, weighted-average useful life	3.0								3.2	3.0	0.8
Advertising expenses	$ 8,070,000	$ 6,836,000	$ 5,843,000
Product warranty Period													1 year	9 months	12 months	30 days
Expected maximum life of employee stock purchase plan (in years)	1											5