Intangible assets (Tables)

12 Months Ended

Dec. 31, 2016

Intangible assets

Schedule of intangible assets, net

	December 31,
	2016			2015
	(in thousands)
Proprietary modified-release drug delivery technology	$	15,600		$	15,600
Tussionex ANDA		4,829			4,829
CPI profit sharing		2,043			2,043
Other		784			284
		23,256			22,756
Accumulated amortization		(7,677	)		(6,084	)
	$	15,579		$	16,672

Schedule of aggregate amortization of intangible assets

Year ending December 31:	December 31, 2016
	(in thousands)
2017	$	1,562
2018		1,562
2019		1,562
2020		1,562
2021		1,562
Thereafter		7,769
	$	15,579