Commitments And Contingencies (Narrative) (Details)	12 Months Ended			12 Months Ended
	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2011 CAD	Dec. 31, 2011 Retail Sales Tax Assessment [Member] USD ($)	Dec. 31, 2011 Severance [Member] USD ($)	Dec. 31, 2011 Change Of Control And Employee Severance [Member] USD ($)	Dec. 31, 2011 Chrome [Member] USD ($)
Loss Contingencies [Line Items]
Lease expiration date	October 15, 2018
Lease renewal period	5 years
Estimate of possible loss					$ 5,300,000	$ 2,200,000
Settlement amount				63,000
Sales tax payment obligation, minimum			3,900,000
Sales tax payment obligation, maximum			4,300,000
AAX service credit	2,500,000
AAX service credit expiration date	December 31, 2015
AAX service credit utilized	900,000	200,000
AAX service credit remaining	1,400,000
Future minimum rental payments in 2012	7,290,000						500,000
Future minimum rental payments in 2013	$ 6,135,000						$ 400,000