Goodwill and Intangible Assets, Net (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in the Carrying Value of Goodwill, IPR&D and Intangible Assets

Changes in the carrying value of the nano-carrier technology intangible asset, the ONIVYDE intangible asset, IPR&D and goodwill for the years ended December 31, 2015 and 2014 were as follows:

(in thousands)	Nano-carrier technology intangible asset			ONIVYDE intangible asset			IPR&D			Goodwill
Balance, December 31, 2013	$	1,845		$	—		$	6,200		$	3,605
Amortization		(320	)		—			—			—
Balance, December 31, 2014		1,525			—			6,200			3,605
Reclassification of IPR&D to definite-lived intangible assets		—			3,400			(3,400	)		—
Amortization		(320	)		(50	)		—			—
Balance, December 31, 2015	$	1,205		$	3,350		$	2,800		$	3,605

Schedule of Expected Amortization Expense for Intangible Assets for the Next Five-Year Period

Amortization expense is expected to be as follows for the next five-year period:

Years Ended December 31,	(in thousands)
2016	$	578
2017		578
2018		578
2019		503
2020		258