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Composition of Share Capital (Detail) - shares
Sep. 30, 2016
Dec. 31, 2015
Sep. 30, 2015
Dec. 31, 2014
Equity [Abstract]        
Number of ordinary shares,Authorized 20,000,000 20,000,000 20,000,000 20,000,000
Number of ordinary shares,Issued 4,541,500 4,541,500 4,541,500 4,541,500
Number of ordinary shares, Outstanding 4,541,500 4,541,500 4,541,500 4,541,500
Number of preferred A shares,Authorized 4,000,000 4,000,000 4,000,000 4,000,000
Number of preferred A shares, Issued 3,862,400 3,000,000 3,000,000 3,000,000
Number of preferred A shares, Outstanding 3,862,400 3,000,000 3,000,000 3,000,000