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Commitments and Contingent Liabilities - Future Minimum Lease Payments under Operating Leases (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Commitments And Contingencies Disclosure [Abstract]  
2016 $ 24,032
2017 17,926
2018 13,945
2019 12,791
2020 8,291
Thereafter 22,414
Subtotal 99,399
Sublease income (48)
Total minimum lease payments $ 99,351