Annual report pursuant to Section 13 and 15(d)

Leases - Future Minimum Lease Payments Under Non-Cancellable Leases (Detail)

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Leases - Future Minimum Lease Payments Under Non-Cancellable Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Leases [Line Items]  
2013 $ 7,114
2014 6,267
2015 5,160
2016 5,041
2017 4,683
Later years 28,716
Total minimum lease payments 56,981
2013 830
2014 141
2015 71
2016 43
2017 3
Later years   
Total minimum lease payments 1,088
Less amounts representing interest (24)
Present value of net minimum lease payments (including $819 currently payable) $ 1,064