Annual report pursuant to Section 13 and 15(d)

Professional Fees and Other Expenses - Additional Information (Detail)

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Professional Fees and Other Expenses - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Other Income And Expenses [Abstract]  
Professional fees and other expenses $ 29.1
Advisory retainer fees 6.0
Minimum guaranteed retainer fees 4.0
Liability Award expense recognized 3.5
Liability Award expense unrecognized $ 3.3