Other Intangible Assets - Summary of Other Intangible Assets Net Consisting of Product Rights and Licenses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 10,950	$ 10,950
Accumulated Amortization	(7,694)	(6,724)
Intangible Assets, net	$ 3,256	$ 4,226
Weighted average Useful Life	10 years 10 months 6 days	10 years 9 months 18 days
Product Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 9,050	$ 9,050
Accumulated Amortization	(6,177)	(5,302)
Intangible Assets, net	$ 2,873	$ 3,748
Weighted average Useful Life	9 years 1 month 17 days	9 years 1 month 21 days
Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 1,900	$ 1,900
Accumulated Amortization	(1,517)	(1,422)
Intangible Assets, net	$ 383	$ 478
Weighted average Useful Life	14 years	1 year 7 months 28 days