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Organization and Nature of Business - Additional Information (Detail) - Orencia Royalties from Bristol	Apr. 07, 2008 USD ($)
First $500 million of annual net sales
Organization And Nature Of Business [Line Items]
Bristol Settlement agreement, royalty payment rate	1.80%
Annual net sales	$ 500,000,000
Next $500 million of annual net sales
Organization And Nature Of Business [Line Items]
Bristol Settlement agreement, royalty payment rate	2.00%
Annual net sales	$ 500,000,000
Annual net sales in excess of $1 billion for each year from January 1, 2008 until December 31, 2013
Organization And Nature Of Business [Line Items]
Bristol Settlement agreement, royalty payment rate	4.00%
Annual net sales	$ 1,000,000,000