Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Summary of Operating Lease Exit Accruals (Detail)

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Summary of Significant Accounting Policies - Summary of Operating Lease Exit Accruals (Detail) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Sep. 30, 2014
Accounting Policies [Abstract]  
Balance, December 31, 2013 $ 27,234
Lease exit expense (272)
Payments (5,445)
Lease buyout (1,556)
Balance, September 30, 2014 $ 19,961