Annual report pursuant to Section 13 and 15(d)

Professional Fees and Other Expenses - Additional Information (Detail)

v3.3.1.900
Professional Fees and Other Expenses - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Other Income And Expenses [Abstract]      
Professional fees and other expenses $ 18.7 $ 25.1 $ 29.1