Amortizable Intangible Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Liabilities [Line Items]
Alliance and product supply agreement commitment (See Note 18)	$ 68,200	$ 68,200
Less accumulated amortization	(58,873)	(53,543)
Net Alliance and product supply agreement	9,327	14,657
Lease agreements (net of accumulated amortization of $2,628 and $606)	12,563	14,585
Finite Lived Intangible Liabilities Net, Total	$ 21,890	$ 29,242