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Commitments and Contingencies (Schedule of Contractual Obligations and Future Cash Payments) (Footnotes) (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]      
Operating lease expenses $ 116 $ 72 $ 77