Contingencies - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Dec. 31, 2012	Jun. 30, 2015
Commitment And Contingencies [Line Items]
Judgments and settlement costs	$ 500,000	$ 500,000		$ 0
Amount paid to settlement of claims		1,300,000
Discontinued operations for compensatory damages and exemplary damages	5,800,000	5,800,000
Litigation Related To Promeca [Member]
Commitment And Contingencies [Line Items]
Deferred prosecution agreement term			3 years
Sec Matter [Member]
Commitment And Contingencies [Line Items]
Charges related to U.S. Government resolutions		8,300,000
Brazil Related Allegations [Member]
Commitment And Contingencies [Line Items]
Allegations related charge	4,600,000
Brazil Related Allegations [Member] | Maximum [Member]
Commitment And Contingencies [Line Items]
Additional loss in excess of loss accrued	$ 1,500,000	$ 1,500,000