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
 6 Months Ended
Jun. 30, 2014
Accounting Policies [Abstract]  
Beginning balance $ 27,234
Lease exit expense 624
Payments (3,874)
Lease buyout (1,556)
Ending balance $ 22,428