Annual report pursuant to Section 13 and 15(d)

Property, Plant and Equipment - Additional Information (Detail)

v3.3.1.900
Property, Plant and Equipment - Additional Information (Detail)
ft² in Thousands, $ in Millions
12 Months Ended
Dec. 31, 2015
USD ($)
ft²
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Operating Leased Assets [Line Items]      
Lease agreement expenses | $ $ 5.9 $ 5.6 $ 9.5
Office space area of leased premises | ft² 8    
Operating Lease Amendment [Member]      
Operating Leased Assets [Line Items]      
Lease expiration date Jan. 31, 2020