Contingencies - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Feb. 29, 2016	Mar. 31, 2016	Dec. 31, 2012	Dec. 31, 2015
Commitment And Contingencies [Line Items]
Judgments and settlement costs				$ 0.3
Amount paid to settlement of claims		$ 1.3
Discontinued operations for compensatory damages and exemplary damages		$ 6.0
IMSS [Member]
Commitment And Contingencies [Line Items]
Settlement amount payable in cash	$ 1.0
Settlement amount payable in form of products and training	$ 3.0
Agreement consisting of cash and inventory included in general and administrative expense				$ 4.0
Litigation Related To Promeca
Commitment And Contingencies [Line Items]
Deferred prosecution agreement term			3 years