Subsequent Event - Additional Information (Detail) (Subsequent Event [Member], Talon Therapeutics, Inc. [Member], USD $) Share data in Millions, except Per Share data, unless otherwise specified	1 Months Ended
	Jul. 17, 2013
Business Acquisition [Line Items]
Securities Purchase Agreement date	Jul. 16, 2013
Additional shares business acquisition date	Jul. 17, 2013
Cash consideration	$ 11,300,000
Common stock in exchange for the cancellation	3.0
Common stock value, per share	$ 8.77
Common stock value assigned	26,300
Contingent value rights future cash payments	195,000,000
Milestone Payments methods	upon satisfaction of the following specific milestones, of which there is no assurance that any may be achieved: • $5,000,000 upon the achievement of net sales of Marqibo (vincristine sulfate liposome injection) in excess of $30,000,000 in any calendar year; • $10,000,000 upon the achievement of net sales of Marqibo in excess of $60,000,000 in any calendar year • $25,000,000 upon the achievement of net sales of Marqibo in excess of $100,000,000 in any calendar year • $50,000,000 upon the achievement of net sales of Marqibo in excess of $200,000,000 in any calendar year • $100,000,000 upon the achievement of net sales of Marqibo in excess of $400,000,000 in any calendar year $5,000,000 upon receipt of marketing authorization from the FDA regarding Menadione Topical Lotion
Estimated fair value of acquisition	6,500
Securities Purchase Agreement with Eagle Acquisition Merger Sub, Inc. [Member]
Business Acquisition [Line Items]
Purchased of shares of common stock of Talon owned in approximately percentage	89.00%
Stock Purchase Agreement with Acquisition Sub and Talon [Member]
Business Acquisition [Line Items]
Purchased of shares of common stock of Talon owned in approximately percentage	90.00%
Milestone Payments [Member]
Business Acquisition [Line Items]
Milestone net sales achievement	5,000,000
Milestone net sales achievement	30,000,000
Milestone Payment One [Member]
Business Acquisition [Line Items]
Milestone net sales achievement	10,000,000
Milestone net sales achievement	60,000,000
Milestone Payment Two [Member]
Business Acquisition [Line Items]
Milestone net sales achievement	25,000,000
Milestone net sales achievement	100,000,000
Milestone Payment Three [Member]
Business Acquisition [Line Items]
Milestone net sales achievement	50,000,000
Milestone net sales achievement	200,000,000
Milestone Payment Four [Member]
Business Acquisition [Line Items]
Milestone net sales achievement	100,000,000
Milestone net sales achievement	400,000,000
Menadione Topical Lotion [Member]
Business Acquisition [Line Items]
Milestone net sales achievement	$ 5,000,000