Annual report pursuant to Section 13 and 15(d)

Consolidated Financial Statement Detail - Property and Equipment, Net (Details)

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Consolidated Financial Statement Detail - Property and Equipment, Net (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Property Plant And Equipment [Abstract]    
Equipment and furniture $ 124 $ 14,023
Leasehold improvements   554
Property and equipment, gross 124 14,577
Less: Accumulated depreciation and amortization (41) (13,541)
Property and equipment, net $ 83 $ 1,036