FOLOTYN Agreement And Drug Development Liability - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended
	May 29, 2013	Mar. 31, 2017	Mar. 31, 2016
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Company determined development payment		$ 50,430	$ 50,149
Mundipharma [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Company determined development payment	$ 7,000
Maximum [Member] | Regulatory [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Potential milestone payments		16,000
Maximum [Member] | Commercial progress and sales-dependent [Member]
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Potential milestone payments		$ 107,000