Property and Equipment, Net |
12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2017 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Property Plant And Equipment [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Property and Equipment, Net | 5. Property and Equipment, Net Property and equipment, net consisted of the following:
Depreciation and amortization expense for the years ended December 31, 2017, 2016 and 2015 was $95, $232 and $325, respectively. During the year ended December 31, 2017, fully depreciated assets with a cost of $210 were disposed of for no proceeds, resulting in neither a gain nor a loss and during the year ended December 31, 2016, assets with a cost of $12 were disposed of for no proceeds, resulting in a loss of $12. No assets were disposed of during the year ended December 31, 2015. |