Organization And Summary Of Significant Accounting Policies (Details) (USD $)	12 Months Ended		1 Months Ended	12 Months Ended			12 Months Ended				12 Months Ended
	Dec. 31, 2011 years	Dec. 31, 2010	Feb. 28, 2011 4.75% Convertible Senior Notes Due On 2018 [Member]	Dec. 31, 2011 4.75% Convertible Senior Notes Due On 2018 [Member]	Dec. 31, 2011 Debt Component [Member]	Dec. 31, 2011 Equity Component [Member]	Dec. 31, 2011 Maximum [Member]	Dec. 31, 2011 KRYSTEXXA [Member]	Dec. 31, 2011 Oxandrin And Oxandrolone [Member]	Dec. 31, 2010 Oxandrin And Oxandrolone [Member]	Dec. 31, 2011 Restricted Stock Units (RSUs) [Member] Minimum [Member]	Dec. 31, 2011 Restricted Stock Units (RSUs) [Member] Maximum [Member]	Dec. 31, 2001 2001 Stock Option Plan [Member]
Organization and Summary of Significant Accounting Policies [Line Items]
Weighted-average maturities at date of purchase, days							90
Restricted cash	$ 2,600,000	$ 1,300,000
Allowance for doubtful accounts	28,000	25,000
Charge against income to reserve for excess inventory								4,700,000
Net aggregate inventory valuation reserve	4,671,000	1,266,000								0
Estimated useful lives of the assets, minimum, in years	3
Estimated useful lives of the assets, maximum, in years	10
Financing costs				7,300,000
Principal amount	1,000		230,000,000	230,000,000
Senior Convertible Notes, interest rate	4.75%			4.75%
Convertible senior notes, maturity date	Feb. 01, 2018		Feb. 01, 2018	Feb. 01, 2018
Deferred financing costs				4,800,000	5,400,000	1,900,000
Deferred financing costs recorded as a long-term asset	4,068,000			4,100,000
Deferred financing costs amortization period	7
Aggregate net product return allowance reserve									900,000	500,000
Aggregate net rebate accrual balances										300,000
Options granted term, years	10
Minimum vesting period, years											three		two
Maximum vesting period, years												4
Valuation allowance	181,500,000
Increase in valuation allowance	$ 28,500,000