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Summary of Lease Exit Activity (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Restructuring Reserve Disclosures [Abstract]      
Balance at Beginning of Period $ 453 $ 740  
Costs Incurred and Charged to Expense (10) 1,220 740
Costs Paid or Otherwise Settled 384 1,507  
Balance at End of Period $ 59 $ 453 $ 740