Related Party Transactions - Additional Information (Detail) - USD ($)			3 Months Ended	12 Months Ended
	Mar. 31, 2016	Jun. 25, 2015	Jun. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Avista [Member] | INC [Member]
Related Party Transaction [Line Items]
Costs incurred associated with agreement						$ 500,000
Agreement term					5 years
Due from parent				$ 0	$ 0
Avista [Member] | INC [Member] | Scenario, Forecast [Member]
Related Party Transaction [Line Items]
Agreement term	3 years
Avista [Member] | Advisory Services and Monitoring Agreement [Member]
Related Party Transaction [Line Items]
Annual fee				1,000,000
Costs incurred associated with agreement				7,000,000	1,000,000	1,000,000
Purchases included in accounts payable and accrued expenses				$ 22,000	10,000
Agreement term				7 years
Aggregate termination fee paid		$ 6,500,000	$ 6,500,000
Due from parent				$ 0
VWR [Member]
Related Party Transaction [Line Items]
Expected payment to related party				300,000	500,000	$ 300,000
VWR [Member] | Accounts Payable and Accrued Liabilities [Member]
Related Party Transaction [Line Items]
Purchases included in accounts payable and accrued expenses				10,000	21,000
Marsh [Member]
Related Party Transaction [Line Items]
Expected payment to related party				$ 200,000
Prepaid expense due to related party in other current assets					$ 43,000