Summary of Significant Accounting Policies Concentration Risk (Details)	3 Months Ended
	Mar. 31, 2012 Sales Revenue, Goods, Net [Member] License Number One [Member]	Mar. 31, 2011 Sales Revenue, Goods, Net [Member] License Number One [Member]	Mar. 31, 2012 Sales Revenue, Goods, Net [Member] License Number Two [Member]	Mar. 31, 2011 Sales Revenue, Goods, Net [Member] License Number Two [Member]	Mar. 31, 2012 Sales Revenue, Goods, Net [Member] License Number Three [Member]	Mar. 31, 2012 Accounts Receivable [Member] License Number One [Member]	Dec. 31, 2011 Accounts Receivable [Member] License Number One [Member]	Mar. 31, 2012 Accounts Receivable [Member] License Number Two [Member]	Dec. 31, 2011 Accounts Receivable [Member] License Number Two [Member]	Mar. 31, 2012 Accounts Receivable [Member] License Number Three [Member]	Dec. 31, 2011 Accounts Receivable [Member] License Number Three [Member]	Mar. 31, 2012 Accounts Receivable [Member] License Number Four [Member]	Dec. 31, 2011 Accounts Receivable [Member] License Number Four [Member]	Dec. 31, 2011 Accounts Receivable [Member] License Number Five [Member]
Concentration Risk [Line Items]
Concentration of licensees contributing to revenue recognized during the period	54.00%	74.00%	20.00%	11.00%	18.00%
Licensees contributing to accounts receivable balance						29.00%	18.00%	16.00%	15.00%	15.00%	14.00%	12.00%	13.00%	10.00%