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Leases - Schedule of Changes in Future Minimum Lease Obligations (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Leases [Abstract]      
Balance, Beginning of Period $ 13,262 $ 12,831 $ 17,770
Charges Incurred 5,209 4,249 1,313
Net Cash Payments (9,202) (3,818) (6,544)
Other 3,292   292
Balance, End of Period $ 12,561 $ 13,262 $ 12,831