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Future Minimum Lease Payments to be Received under Noncancelable Subleases (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Sale Leaseback Transaction [Line Items]  
2016 $ 733
2017 591
2018 528
2019 376
2020 210
2021 and thereafter 887
Future Minimum Sublease Rentals, Sale Leaseback Transactions, Total $ 3,325