Commitments And Contingencies (Narrative) (Details) (USD $)	1 Months Ended			3 Months Ended
	May 31, 2010	Nov. 30, 2008	May 31, 2007	Mar. 31, 2012 Y M	Mar. 31, 2011	Jan. 23, 2012 sqft
Commitments And Contingencies [Abstract]
Rentable square feet of office facilities						48,000
New lease term, months				123
Number of lease renewal options				2
Number of years lease agreement, renewal option				5
Aggregate minimum lease commitment				$ 15,200,000
Letter of credit to secure obligations under lease				1,500,000
Tenant improvement allowance				2,000,000
Rent expense from operations				700,000	500,000
Tax assessment	1,700,000		1,200,000
Increase in tax assessment due to additional interest and penalties	500,000
Number of clinical trials		3
Number of senior officers with employment agreements				9
Annual employee benefits compensation committed				3,600,000
Number of years employment agreement renewed, period				one
Severance agreements, aggregate amount				1,300,000
Retention awards vesting percentage of award on specific dates				50.00%
Award vesting period, years				two
Potential commitment of retention awards				2,000,000
Term of employment agreement, in years				3
Settlement including penalty and interest				327,000,000,000
Consideration payment per Consulting Agreement				$ 20,000
Number of former employees				2