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Financed Lease Receivables - Future Minimum Lease Payments under Non-Cancelable Sales-Type Leases (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Future minimum lease payments under non-cancelable sales-type leases    
2016 $ 1,558  
2017 1,173  
2018 14  
2019 0  
Total minimum future lease payments $ 2,745 $ 3,489